Crystal Shield (perk)
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Crystal Shield | |
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Release date | 5 September 2016 (Update) |
Gizmo type | Armour |
Maximum rank | |
Standard | 3 |
Ancient | 4 |
In-game description | |
Has a 10% chance to activate on taking damage, lasting 10 seconds. 5% of damage taken per rank is totalled for this period, becoming temporary lifepoints afterwards. These last either 30 seconds or until depleted through further damage. (1 minute cooldown) This perk has an increased chance to activate on level 20 items. | |
Infobox • Talk page |
Crystal Shield is a defensive Invention perk that, upon activation, will add 5% of all damage taken per rank for ten seconds into a pool of life points. This also includes typeless damage. For the following 30 seconds, damage taken will reduce this storage of life points rather than the player's actual life points until the separate pool is depleted or the 30 seconds have passed. It can be created in armour gizmos.
The perk has a 10% chance of activating (11% on a level 20 item). The hit that activates the Crystal Shield will also be added to the life point pool. This perk has a 1 minute cooldown after it has activated.
When the perk triggers, it prompts the message: Your Crystal Shield perk has activated and will begin storing damage to use as ablative hitpoints. When the stored life points deplete, it prompts the message: Your crystal shield lifepoints have been depleted! When the timer ends before the stored life points deplete, it prompts the message: Your crystal shield perk has run out! When the player doesn’t receive significant damage during the perk’s activation period, it prompts the message: You did not absorb enough damage to generate a crystal shield.
Damage from poison can also trigger the perk. Any self-inflicted damage is also added to the life point pool. These include:
- Nitroglycerine/Unidentified liquid
- Super Zamorak brew/Zamorak brew
- Self-damaging abilities, e.g. blood tendrils
- Rock cake
Analysis[edit | edit source]
Table of damage reduction provided by Crystal Shield. The damage reduction varies with the rank of the perk, the attack rate of the enemy[note 1], and if the perk is on level 20 gear.
Rank | Average Damage Reduction | |||||||
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1 | 0.73% (0.74%) | 0.68% (0.69%) | 0.70% (0.71%) | 0.59% (0.60%) | 0.67% (0.69%) | 0.58% (0.60%) | 0.63% (0.65%) | 0.45% (0.47%) |
2 | 1.47% (1.48%) | 1.36% (1.38%) | 1.40% (1.43%) | 1.18% (1.21%) | 1.33% (1.38%) | 1.15% (1.20%) | 1.25% (1.30%) | 0.91% (0.95%) |
3 | 2.20% (2.22%) | 2.03% (2.07%) | 2.09% (2.14%) | 1.76% (1.81%) | 2.00% (2.06%) | 1.73% (1.79%) | 1.88% (1.95%) | 1.36% (1.42%) |
4 | 2.94% (2.96%) | 2.71% (2.75%) | 2.79% (2.85%) | 2.35% (2.42%) | 2.67% (2.75%) | 2.31% (2.39%) | 2.50% (2.60%) | 1.82% (1.90%) |
Calculations | ||
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Using these simplifications, the damage reduction reduces to
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Extreme uses of Crystal Shield[edit | edit source]
This has been patched with an update on 27 September 2021.
Details |
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The Crystal Shield perk has two additional effects. In scenarios similar to this, the damage reduction from Crystal Shield is extremely high (much, much higher than the values in the table above).
Crystal Shield (life saver) Crystal Shield (damage immunity) Life saver: An example of Crystal Shield 3 saving the player's life. In this example, the player takes 3 hits during the absorption phase - an , a , and a . This means that the life points stored in the pool is (as can be seen once hovered over on the buff bar). Next, should the player take a hit larger than the current life points, the player will be alive with as many life points stored in the Crystal Shield ( in this case). Damage immunity: An example of Crystal Shield 3 providing damage immunity. In this example, the player takes 5 hits during the absorption phase - a , a , a , a , and a . This means that the life points stored in the pool is (as can be seen once hovered over on the buff bar). Next, the player's life points are at the start of the reduction phase. If the player takes damage that is greater than , the damage removed from the pool will be reduced to (regardless of how high the hit would have been). In this case, two hits are taken during the reduction phase, both of which are larger than player's life points and as a result are removed from the pool. This can be seen once the life points displayed on the buff bar updates to . |
Sources[edit | edit source]
Material | Rarity | Perk ranks with X materials | ||||||||||||||
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Standard gizmo | Ancient gizmo | |||||||||||||||
1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |||
Clear parts | Common | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
Subtle components | Uncommon | 1 | 1 | 1–2 | 1–3 | 1–3 | 1 | 1 | 1 | 1–2 | 1–3 | 1–4 | 1–4 | 1–4 | 1–4 | |
Faceted components | Rare | 1 | 1 | 1 | 2–3 | 3 | 0 | 0 | 0 | 1 | 3 | 3–4 | 4 | 4 | 4 |
Suggested gizmos[edit | edit source]
Gizmo layout | Possible perks | Approx costs | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
| Chance decreases with ![]()
Open in calculator: ![]() | 926,856
| |||||||||
| Chance increases with ![]()
Open in calculator: ![]() | 72,755,120.9
See RS:Material prices for details on how prices are approximated. | |||||||||
| Chance is highest at level 100. Chance decreases with ![]()
Open in calculator: ![]() | 12,677,753.52
See RS:Material prices for details on how prices are approximated. | |||||||||
| Chance is highest at level 120. Chance decreases with ![]()
Open in calculator: ![]() | 4,930,092.17
See RS:Material prices for details on how prices are approximated. | |||||||||
|
Open in calculator: ![]() | 579,285
| |||||||||
|
Open in calculator: ![]() | 553,699.5
See RS:Material prices for details on how prices are approximated. | |||||||||
|
Open in calculator: ![]() | 316,703.28
See RS:Material prices for details on how prices are approximated. | |||||||||
|
Open in calculator: ![]() | 291,117.78
See RS:Material prices for details on how prices are approximated. |
Update history[edit | edit source]
- Update):
27 September 2021 (
- Crystal Shield now has a new hitsplat. This hitsplat type is shared with the 5 piece passive part of the set effect of the Cryptbloom armour, Nature's Envoy, called fungal shield. Along with this update, the extreme uses of Crystal Shield no longer work.
- patch 11 March 2019 (Update):
- The following message now gets filtered: "Your crystal shield lifepoints have been depleted!"
- patch 12 June 2017 (Update):
- A debuff icon has been added to tell you when Crystal Shield comes off Cooldown (similar to Crackling).
- A tooltip has been to the Crystal Shield defence active buff icon which shows how many temporary life points you have.
- A 1 minute cooldown text line has been added to the Crystal Shield and Crackling perk descriptions.
Notes[edit | edit source]
References[edit | edit source]
Abilities | |
Damage/Accuracy modifying | |
Damage reduction | |
Adrenaline | |
Prayer | |
Additional items | |
Experience | |
Skilling | |
Energy drain reduction | |
Utility | |
Miscellaneous | |
Ancient |