Strategies for Rex Matriarchs

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Invasion plans.png
This article is a strategy guide for Rex Matriarchs.
Information on mechanics, setups, and tactics is on this page.

Recommended levels and equipment[edit | edit source]

Requirements
Anachronia lodestone icon.png
You need to unlock Anachronia to gain access to this boss.
Level recommendations
Style All Large.png
It is recommended to have at least level 99+ in your chosen combat style (Attack & Strength, Ranged or Magic).
Defence.png
It is recommended to have at least level 99+ Defence.
Deflect Melee.png
At least 71 Prayer and ancient curses are recommended to protect against this boss' attacks.
Overload detail.png
Use the best combat potions that you have to increase your hit chance and damage. Overloads are recommended at level 96 Herblore.
Precise.png
Augmented gear with basic perks is sufficient at 86 Invention.
Gameplay
Soul Split.png
If you deal high damage, you can use soul split during the fight instead of protection prayers.
Equipment recommendations
Stab weakness icon.png
It is recommended to use stab weapons.
Ranged Immune.png
This boss is almost fully immune to ranged damage, which means you have an extremely low hit chance using ranged weapons.
Magic Immune.png
This boss is almost fully immune to magic damage, which means you have an extremely low hit chance using magic weapons.
Hybrid.png
Use tier 90 weaponry or better
(see recommendations).
Super antipoison detail.png
Protection such as super antipoisons or elder overload salves is recommended to protect against this boss's poison attacks.
Necklace of Salamancy.png
Provides a 15% accuracy and damage buff as well as a 3% drop rarity boost.
Optional boosts
Summoning.png
This boss is almost fully immune to non-melee familiar damage. Use a familiar with a damage-boosting passive to increase your damage: Ripper demon, Kal'gerion demon, or Blood reaver.
Venomblood.png
It is recommended to add the venomblood perk to your armour to protect against this boss' heavy poison attacks.
Corrupted slayer helmet chathead.png
This boss counts as a slayer task for 'Dinosaurs'. The slayer helmet provides additional damage and accuracy if you are on task.
Cinderbane gloves detail.png
This boss is poisonable, and cinderbane gloves and weapon poisons deal additional damage.
Terrasaur maul detail.png
The terrasaur maul deals +12.5% ability damage and has a flat +10% hitchance when used against this boss.

Requirements
Anachronia lodestone icon.png
You need to unlock Anachronia to gain access to this boss.
Level recommendations
Style All Large.png
It is recommended to have at least level 99+ in your chosen combat style (Attack & Strength, Ranged or Magic).
Defence.png
It is recommended to have at least level 99+ Defence.
Deflect Melee.png
At least 71 Prayer and ancient curses are recommended to protect against this boss' attacks.
Overload detail.png
Use the best combat potions that you have to increase your hit chance and damage. Overloads are recommended at level 96 Herblore.
Precise.png
Augmented gear with basic perks is sufficient at 86 Invention.
Gameplay
Deflect Melee.png
If you deal low damage use protect from melee or deflect melee.
Soul Split.png
If you deal high damage, you can use soul split during the fight instead of protection prayers.
Equipment recommendations
Fire weakness icon.png
It is recommended to use fire, blood spells or Exsanguinate.
Attack Immune.png
This boss is almost fully immune to melee damage, which means you have an extremely low hit chance using melee weapons.
Ranged Immune.png
This boss is almost fully immune to ranged damage, which means you have an extremely low hit chance using ranged weapons.
Hybrid.png
Use tier 90 weaponry or better
(see recommendations).
Necklace of Salamancy.png
Provides a 15% accuracy and damage buff as well as a 3% drop rarity boost.
Optional boosts
Summoning.png
This boss is almost fully immune to non-magic familiar damage. Use a familiar with a damage-boosting passive to increase your damage: Ripper demon, Kal'gerion demon, or Blood reaver.
Corrupted slayer helmet chathead.png
This boss counts as a slayer task for 'Dinosaurs'. The slayer helmet provides additional damage and accuracy if you are on task.
Cinderbane gloves detail.png
This boss is poisonable, and cinderbane gloves and weapon poisons deal additional damage.
Inquisitor staff detail.png
The inquisitor staff deals +12.5% ability damage and has a flat +10% hitchance when used against this boss.

Requirements
Anachronia lodestone icon.png
You need to unlock Anachronia to gain access to this boss.
Level recommendations
Style All Large.png
It is recommended to have at least level 99+ in your chosen combat style (Attack & Strength, Ranged or Magic).
Defence.png
It is recommended to have at least level 99+ Defence.
Deflect Melee.png
At least 71 Prayer and ancient curses are recommended to protect against this boss' attacks.
Overload detail.png
Use the best combat potions that you have to increase your hit chance and damage. Overloads are recommended at level 96 Herblore.
Precise.png
Augmented gear with basic perks is sufficient at 86 Invention.
Gameplay
Deflect Magic.png
If you deal low damage use protect from magic or deflect magic.
Soul Split.png
If you deal high damage, you can use soul split during the fight instead of protection prayers.
Equipment recommendations
Arrow weakness icon.png
It is recommended to use arrows.
Attack Immune.png
This boss is almost fully immune to melee damage, which means you have an extremely low hit chance using melee weapons.
Magic Immune.png
This boss is almost fully immune to magic damage, which means you have an extremely low hit chance using magic weapons.
Hybrid.png
Use tier 90 weaponry or better
(see recommendations).
Insulated boots detail.png
The insulated boots provide drastic reduction from the lightning damage of the 'Converging Lightning' attack, although it is not required if you avoid the attack.
Necklace of Salamancy.png
Provides a 15% accuracy and damage buff as well as a 3% drop rarity boost.
Optional boosts
Summoning.png
This boss is almost fully immune to non-ranged familiar damage. Use a familiar with a damage-boosting passive to increase your damage: Ripper demon, Kal'gerion demon, or Blood reaver.
Corrupted slayer helmet chathead.png
This boss counts as a slayer task for 'Dinosaurs'. The slayer helmet provides additional damage and accuracy if you are on task.
Cinderbane gloves detail.png
This boss is poisonable, and cinderbane gloves and weapon poisons deal additional damage.
Hexhunter bow detail.png
The hexhunter bow deals +12.5% ability damage and has a flat +10% hitchance when used against this boss.
Seren godbow detail.png
The Seren godbow's special attack is very strong against this target with all combat styles as it is a 5x5+ target.

Strategy[edit | edit source]

Safe path to get to each matriarch, and safe spot to attack it without aggro'ing the others

The rex matriarchs are a trio of dinosaurs consisting of Orikalka, Rathis and Pthentraken. The rex matriarchs are similar to their lower levelled predecessors, the dagannoth Kings, in that they the are found within the same area and that each of them is weak to one of the three combat styles and immune to the other two.

Unlike the fight against dagannoth kings it is possible to fight against only one of the rex matriarchs at a time. It is strongly recommended that you fight only one matriarch at a time due to their high Defence and armour ratings making it necessary to use its specific weakness during the fight; the high amount of damage dealt if attacked by multiple matriarchs at once; and due to each boss having unique mechanics that the player must react to. Each boss has a set rotation of auto-attacks and special attacks which is repeated throughout the fight.

For solo players camping only one matriarch, set the instance to fastest. If killing all three, set to standard.

While the matriarchs have overworld spawns, this is not recommended for tribrid players as the matriarchs there spawn significantly faster than a standard speed instance and will likely throw off kill order.

Getting there[edit | edit source]

See Rex Matriarchs, Getting there.

Rathis[edit | edit source]

Style required: Attack.png Melee

Prayer required: Soul Split.png: RS3 Inventory image of Soul SplitSoul Split/Deflect Melee.png: RS3 Inventory image of Deflect MeleeDeflect Melee

Rathis Auto Attack.gif
Rathis attacks using ranged auto-attacks that are fairly weak but which she uses frequently. The auto-attacks will register damage before the projectiles hit you.

Rathis Melee Attack.gif
Rathis also uses a melee auto-attack that is fairly weak, although it is less common.

Rathis Acid Bomb.gif

The main special attack is Acid Bombardment in which she launches two poison orbs into the air; one at her target's position when the mechanic is initiated, and another around her. This ranged attack has a 5x5 AoE; getting hit by the subsequent splatter will always inflict up to 3,500 ranged damage.

While standing on these poison patches, the player will take rapid soft poison damage of around 300-500 every few ticks. If the player is under the effects of antipoison or their equipment has the Venomblood perk, the damage is significantly reduced, dealing around 50-100 damage (the poison purge aura doesn't work). Additionally a Corrosion debuff is applied to the player. The debuff causes the player to take 20% additional damage, which can be stacked up to 5 times to a maximum of 100% additional damage. The debuff lasts for 10 seconds from the last time that the player was in contact with a poison patch; taking more poison damage restarts the timer. The patch itself becomes smaller as players absorb the poison, turning from 5x5 to 3x3 and finally two patches of 1x1, one 1x1 with an AoE of 2x2 and one with a normal 1x1 AoE.

Rathis Poison Absorption.gif

Rathis will also use Poison Absorption where she will roar and attempt to absorb any leftover poison patches from the Acid Bombardment attack, healing her based on the amount of acid left. The amount of poison patches remaining determines how much health Rathis will recover; ranging from 1,666 at the minimum to 35,000 for an untouched patch.

It is possible, albeit very hard to Resonance or Divert the attack, but it is better to simply tank the hit or move off of the poison patches.

It is important to fully absorb the patches if the player's damage is lacking, as she will heal for more health than the player is able to damage, thus making kills last longer.

Rathis Charge.gif
If the target is not within melee range, the melee attack is instead replaced with a charge, where she roars and charges towards her target's position, dealing up to 4,500 typeless damage to everyone in her path, stunning and binding them for 3.6 seconds.

Attack rotation:

  • 3 auto-attacks
  • Acid Bombardment
  • 1 auto-attack
  • Melee attack
  • 5 auto-attacks
  • Melee attack
  • 1 auto-attacks
  • Poison Absorption
  • 3 auto-attacks
  • Melee attack
  • 5 auto-attacks
  • Melee attack
  • Loops from top

Orikalka[edit | edit source]

Style required: Magic.png Magic and preferably Fire weakness icon.png Fire spells (Orikalka is weak to fire spells)

Prayer required: Deflect Melee.png: RS3 Inventory image of Deflect MeleeDeflect Melee (to protect against damage from fissures)

Orikalka uses standard melee attacks and a basic magic attack, indicated by a small blue orb. She has two possible attack rotation cycles.

Alternatively, as Orikalka only uses her abilities when she attacks her target, it is possible to bind her and attack from afar to ignore all of her mechanics. She is not immune to stuns or binds, so the Entangle spell can immobilize her for 24 seconds, allowing the player to attack her without receiving any damage. While the ancient spellbook provides greater DPS, Ice Barrage is significantly worse as it is a water spell, increasing the chances of splashing, requires the player to auto-attack for a guaranteed bind and only lasts for 9.6 seconds, being 2.5 times worse than Entangle. It is only particularly useful when on Legacy Mode while dual-wielding due to the greater auto-attack damage and faster attack speed.

Orikalka Auto Attack.gif
Orikalka has a standard melee attack that is fairly weak which she uses frequently.

Orikalka Magic Attack.gif
Orikalka has a standard magic attack that is fairly weak and is used less often.

Orikalka Frost Storm.gif

Frost Storm is a special attack where she spins around to generate an ice tornado which deals a heavy magic hit (4000+ damage) and applies the Frostbite debuff to all players who are within 15 spaces of her. The debuff increases players' global cooldown on abilities for 30 seconds and drains their run energy to 0%. Resonance can be used to heal from the magic hit.

Resonance can be used to receive a huge free heal from the magic Frostbite hit. However, as Frostbite fully drains run energy and significantly delays the global cooldown of abilities, it is highly recommended to avoid this mechanic at all costs as it significantly impedes kill times, especially if she is killed after applying it as there will be no way to remove the debuff outside of natural decay.

Orikalka Pyroclastic Shock.gif
Pyroclastic Shock is a special attack where she attacks with a tail sweep and generates three fissures around her. Standing on the fissures will deal rapid melee hits of 3000+ damage but will also remove the Frostbite debuff from the Frost Storm attack and instead apply a buff that generates 10% adrenaline for the player every game tick (0.6 seconds) for six seconds. It is important to use the Deflect Melee curse and the Devotion ability before moving onto the fissures to reduces the hits to 1 damage. Once Frostbite has been removed subsequent fissures will deal damage as normal. A defensive ability such as Devotion should be used if the player cannot move in time.

Attack rotation:

  • 3 auto-attacks
  • Frost Storm
  • 1 auto-attack
  • Magic auto-attack
  • Pyroclastic Shock
  • 3 auto-attacks
  • Pyroclastic Shock
  • 1 auto-attack
  • Magic auto-attack
  • Loops from top

Attack rotation (alternative cycle):

  • 3 auto-attacks
  • Frost Storm
  • 1 auto-attack
  • Magic auto-attack
  • Pyroclastic Shock
  • 3 auto-attacks
  • Pyroclastic Shock
  • Magic auto-attack
  • 2 auto-attacks
  • Pyroclastic Shock
  • 2 auto-attacks
  • Magic auto-attack
  • Pyroclastic Shock
  • 3 auto-attacks
  • Pyroclastic Shock
  • Magic auto-attack
  • Loops from top

Pthentraken[edit | edit source]

Style required: Ranged.png Ranged

Prayer required: Deflect Magic.png: RS3 Inventory image of Deflect MagicDeflect Magic/Deflect Missiles.png: RS3 Inventory image of Deflect MissilesDeflect Missiles

Pthentraken uses magic auto-attacks, ranged auto-attack, and two special attacks.

Pthentraken is weak to ranged attacks, specifically arrows. Using a weapon with arrows is recommended over other ranged weapons due to the matriarchs' low affinities.

Similarly to Dagannoth Prime, her attacks are far more damaging compared to Orikalka and Rathis, so it is important to switch prayers according to the attacks to minimise damage taken.

Pthentraken Auto Attack.gif
Pthentraken has a standard magic attack that is fairly weak and is used frequently.

Pthentraken Ranged Attack.gif
Pthentraken's ranged attack attack hits very hard, and the ranged projectile deals up to 3,500 damage if not protected against.

Pthentraken Lightning.gif

Converging Lightning is a special attack in which she roars and summons 3-5 lightning bolts. Brown lines appear on the floor indicating the path that the lightning will take; it will converge towards Pthentraken. One of these lines will always aim at where her target was positioned at the start of this mechanic, while the remaining lines are placed at random. Getting caught in the path of the lightning will deal 5,000-5,500 magic damage every 2 game ticks (1.2 seconds), so it is important to move away from them.

Alternatively, this damage can be drastically reduced by wearing insulated boots with a message appearing in the (filtered) chat: Your insulated boots drastically reduce the incoming damage. Although all lines will converge into the centre on the same tick, if any of the lines are out of the arena boundaries, the lightning will appear on the first walkable tile, which causes them to reach her faster.

Action required: The lines are determined with small, but visible dust on the ground. Simply walk away from the lines in order to avoid the massive lightning damage.

Pthentraken Storm Column.gif

Soon after Converging Lightning, Pthentraken will attack her target with Storm Column; indicated by a bar appearing over their head, which causes the player's movement to be delayed for around two seconds. When the bar fills it will unleash a torrent of lightning in a 3x3 radius around the target's initial position. Getting hit by this torrent will apply the Overcharged buff: the player's attacks (poison and familiar does not count) deal an additional magic hit equal which deals 5% of the damage of the original hit and the global cooldown of Surge is reduced to 1 game tick (0.6 seconds), as if the player is under the effects of a powerburst of acceleration for 30 seconds. This effect can be renewed by getting hit by the torrent.

It is important to avoid the torrent area after it appears; similarly to The Sanctum Guardian's corruption patches, the damage increases over time, capping at around 3,600 hard typeless damage every two ticks and can easily kill you. If attempting to receive the buff, allow the lightning to hit you as it spawns, then move out of its area-of-effect.

Action required: Simply move when the torrent is about to emerge to safely obtain Overcharged while taking little damage. It is important to note that their AoEs are larger than they look, so make sure not to run back into the torrent area as it will quickly kill the player.

Attack rotation:

  • 3 auto-attacks
  • Converging lightning
  • 1 auto-attack
  • Ranged attack
  • Storm Column
  • 3 auto-attacks
  • Converging lightning
  • 1 auto-attack
  • Ranged attack
  • Loops from top

High-level AFK strategy[edit | edit source]

The following are AFK guides. Food consumption might be needed occasionally. Picking up drops for profit is also recommended.

Rathis.png

Rathis[edit | edit source]

With the following gear, Rathis can be killed with a revolution bar while semi-AFK.

Vampyrism aura.png
Masterwork helm.png
Illuminated Book of Law.png
TokHaar-Kal-Ket.png
Reaper necklace.png
Armour spikes (alloy).png
Augmented noxious scythe.png
Augmented Masterwork platebody.png
Off-hand slot.png
Augmented Masterwork platelegs.png
Cinderbane gloves.png
Masterwork boots.png
Ring of death.png
Elder overload potion (4).pngSuper prayer renewal potion (6).pngEnhanced Excalibur.pngWeapon poison+++ (4).png
Super restore flask (6).pngSuper restore flask (6).pngSuper restore flask (6).pngMagic notepaper.png
Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png

Equipment:

Inventory:

Familiar:

Action bar:

  • Pulverise reduces the damages that Rathis deals by 25% for 30 seconds.
  • Berserk is recommended if you can keep your health up using Soul Split.

Offensive bar for 40 kills per hour:

  • Hurricane.png
  • Assault.png
  • Blood Tendrils.png
  • Dismember.png
  • Berserk.png
  • Cleave.png
  • Greater Fury.png
  • Sever.png
  • Sacrifice.png
  • Smash.png

Defensive bar for 35 kills per hour or less:

  • Pulverise.png
  • Cleave.png
  • Quake.png
  • Hurricane.png
  • Assault.png
  • Blood Tendrils.png
  • Dismember.png
  • Greater Fury.png
  • Sever.png
  • Sacrifice.png
  • Smash.png

Orikalka.png

Orikalka[edit | edit source]

With the following gear, Orikalka can be killed with a revolution bar while semi-AFK.

Vampyrism aura.png
Virtus mask.png
Illuminated Book of Law.png
TokHaar-Kal-Mej.png
Reaper necklace.png
Large rune pouch (purple).png
Augmented Inquisitor staff.png
Augmented Virtus robe top.png
Off-hand slot.png
Augmented Virtus robe legs.png
Cinderbane gloves.png
Virtus boots.png
Ring of death.png
Elder overload potion (4).pngSuper prayer renewal potion (6).pngEnhanced Excalibur.pngWeapon poison+++ (4).png
Super restore flask (6).pngSuper restore flask (6).pngSuper restore flask (6).pngMagic notepaper.png
Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png

Equipment:

Inventory:

Familiar:

Spell:

Action bar:

  • Sunshine.png
  • Tsunami.png
  • Wild Magic.png
  • Asphyxiate.png
  • Deep Impact.png
  • Sonic Wave.png
  • Dragon Breath.png
  • Corruption Blast.png
  • Chain.png
  • Combust.png
  • Sacrifice.png

Pthentraken.png

Pthentraken[edit | edit source]

With the following gear, Pthentraken can be killed with a revolution bar while semi-AFK.

Vampyrism aura.png
Sirenic mask.png
Illuminated Book of Law.png
TokHaar-Kal-Xil.png
Reaper necklace.png
Tirannwn quiver 4.png
Augmented Seren godbow.png
Augmented sirenic hauberk.png
Off-hand slot.png
Augmented sirenic chaps.png
Cinderbane gloves.png
Insulated boots.png
Ring of death.png
Elder overload potion (4).pngSuper prayer renewal potion (6).pngEnhanced Excalibur.pngWeapon poison+++ (4).png
Super restore flask (6).pngSuper restore flask (6).pngSuper restore flask (6).pngMagic notepaper.png
Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png

Equipment:

Inventory:

Familiar:

Action bar with greater ricochet:

  • Greater Ricochet.png
  • Snap Shot.png
  • Corruption Shot.png
  • Fragmentation Shot.png
  • Bombardment.png
  • Rapid Fire.png
  • Debilitate.png
  • Greater Dazing Shot.png
  • Escape.png


Action bar with greater ricochet and cape-upgraded Dead shot:

  • Greater Dazing Shot.png
  • Deadshot.png
  • Greater Ricochet.png
  • Corruption Shot.png
  • Snap Shot.png
  • Debilitate.png
  • Salt the Wound.png
  • Fragmentation Shot.png
  • Escape.png

Note: if you do not have enough adrenaline buffs and adrenaline becomes an issue with the bar above, you can freely switch greater ricochet with dead shot and fragmentation shot with salt the wound. This will make adrenaline more consistent at the cost of some damage.


Action bar without greater ricochet:

  • Corruption Shot.png
  • Fragmentation Shot.png
  • Snap Shot.png
  • Bombardment.png
  • Sacrifice.png
  • Greater Dazing Shot.png
  • Debilitate.png
  • Rapid Fire.png
  • Tuska's Wrath.png
  • Escape.png


Requirements:

Location to stand after a kill ends in order to area loot drops and be in melee range of Pthentraken when she spawns.

Most if not all of the following conditions must be met:

  • You are using one of the below action bars. Copying these bars exactly is very important so that Escape is used at the correct time.
  • You are melee distance to Pthentraken when she spawns. See image at the right for an ideal location.
  • You must let auto-retaliate initiate combat, otherwise the timing of escape will be incorrect.
  • You are using Weapon poison+++.
  • You are using Cinderbane gloves.
  • You are using a Blood reaver (familiar).
  • You have the Persistent rage relic or charged Adrenaline Urn in order to not lose adrenaline between kills.
  • You must start each kill with more than 35-57 adrenaline (depending upon your adrenaline-modifying boosts such as Impatient and Fury of the small)
  • You have a weapon that can get close to 100% hit chance. A bow is best, but crossbows on a dinosaur slayer task could work too.
  • You must be wearing Insulated boots to reduce the damage taken from the lightning mechanic.

For even less food usage, the following are required: