Legio Primus

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"Primus" redirects here. For the keystone, see Ascension Keystone Primus.
For the pet version, see Legio Primulus.
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This article has a strategy guide.
All information on mechanics, setups, and tactics is on the subpage.
Legio Primus chathead.png

Legio Primus is one of the bosses in the Monastery of Ascension. Accessing him requires an Ascension Keystone Primus.

As with all the bosses in the Monastery of Ascension, Legio Primus attacks primarily with a combination of a basic magic attack and a lightning attack - the latter of which is focused in a 2x2 square (expanding to a 3x3 square and then to a 4x4 square over two game ticks) which deals high, magic-style damage to the player if they stand where the lightning falls. (The lightning attack is always affixed to the player's location, and thus continuously moving throughout the fight is imperative.)

Like all of the Legiones within the Monastery of Ascension, Legio Primus has a special ability which activates as his life points are gradually depleted in 25% intervals (every 7,500 life points drained) until death - occurring a total of three times throughout the fight. His special ability, however, is that both his basic magic attack and lightning attack will increase in potency as his health is depleted incrementally - much like the special ability of Dharok the Wretched, only capped in 7,500-life point intervals. As with all other Legiones, his special ability's activation is signalled by an overhead chat message.

Drops[edit | edit source]

100% drops[edit | edit source]

Item Members Quantity Rarity GE price High alch value
Ascension shard.png: RS3 Legio Primus drops Ascension shard with rarity Always in quantity 16-26Ascension shard (m)P2P icon.png16–26Always3,776-6,136Not alchemisable

Charms[edit | edit source]

No charmGold charm.pngGreen charm.pngCrimson charm.pngBlue charm.png
33–39%11–15%12–16%19–24%14–19%
Represents a 90% confidence range based on a sample of 727 kills.
6 charms are dropped at a time.
Add data to the log (requires JavaScript).

Main drop[edit | edit source]

Item Members Quantity Rarity GE price High alch value
Coins_10000.png: RS3 Legio Primus drops Coins with rarity Common in quantity 37000-40000CoinsF2P icon.png37,000–40,000Common37,000-40,00037,000-40,000
Coins_10000.png: RS3 Legio Primus drops Coins with rarity Uncommon in quantity 57000-60000CoinsF2P icon.png57,000–60,000Uncommon57,000-60,00057,000-60,000
Grimy snapdragon.png: RS3 Legio Primus drops Grimy snapdragon with rarity Common in quantity 10 (noted)Grimy snapdragon (m)P2P icon.png10 (noted)Common15,3900
Grimy avantoe.png: RS3 Legio Primus drops Grimy avantoe with rarity Common in quantity 10 (noted)Grimy avantoe (m)P2P icon.png10 (noted)Common6,7000
Grimy dwarf weed.png: RS3 Legio Primus drops Grimy dwarf weed with rarity Common in quantity 5 (noted)Grimy dwarf weed (m)P2P icon.png(noted)Common19,9650
Grimy lantadyme.png: RS3 Legio Primus drops Grimy lantadyme with rarity Common in quantity 5 (noted)Grimy lantadyme (m)P2P icon.png(noted)Common25,1050
Grimy torstol.png: RS3 Legio Primus drops Grimy torstol with rarity Uncommon in quantity 5 (noted)Grimy torstol (m)P2P icon.png(noted)Uncommon21,0950
Dwarf weed seed.png: RS3 Legio Primus drops Dwarf weed seed with rarity Common in quantity 2Dwarf weed seed (m)P2P icon.png2Common62276
Lantadyme seed.png: RS3 Legio Primus drops Lantadyme seed with rarity Common in quantity 2Lantadyme seed (m)P2P icon.png2Common75476
Torstol seed.png: RS3 Legio Primus drops Torstol seed with rarity Uncommon in quantity 1Torstol seed (m)P2P icon.png1Uncommon75338
Huge plated rune salvage.png: RS3 Legio Primus drops Huge plated rune salvage with rarity Uncommon in quantity 2 (noted)Huge plated rune salvageF2P icon.png(noted)Uncommon77,96480,000
Dragon longsword.png: RS3 Legio Primus drops Dragon longsword with rarity Uncommon in quantity 1Dragon longsword (m)P2P icon.png1Uncommon58,03860,000
Off-hand dragon longsword.png: RS3 Legio Primus drops Off-hand dragon longsword with rarity Uncommon in quantity 1Off-hand dragon longsword (m)P2P icon.png1Uncommon57,81460,000
Sirenic scale.png: RS3 Legio Primus drops Sirenic scale with rarity Uncommon in quantity 1Sirenic scale (m)P2P icon.png1Uncommon[1]365,3316,000
Runite stone spirit.png: RS3 Legio Primus drops Runite stone spirit with rarity Uncommon in quantity 4Runite stone spiritF2P icon.png4Uncommon1,756Not alchemisable
Magic shieldbow (u).png: RS3 Legio Primus drops Magic shieldbow (u) with rarity Common in quantity 45-55Magic shieldbow (u)F2P icon.png45–55Common23,085-28,21534,560-42,240
Dragon arrowheads.png: RS3 Legio Primus drops Dragon arrowheads with rarity Common in quantity 30-60Dragon arrowheads (m)P2P icon.png30–60Common9,120-18,2409,000-18,000
Rune arrowheads.png: RS3 Legio Primus drops Rune arrowheads with rarity Common in quantity 80-120Rune arrowheadsF2P icon.png80–120Common10,640-15,960480-720
Onyx bolt tips.png: RS3 Legio Primus drops Onyx bolt tips with rarity Uncommon in quantity 1-11Onyx bolt tips (m)P2P icon.png1–11Uncommon7,665-84,3155,400-59,400
Crystal triskelion fragment 1.png: RS3 Legio Primus drops Crystal triskelion fragment 1 with rarity Very rare in quantity 1Crystal triskelion fragment 1 (m)P2P icon.png1Very rare[d 1]Not soldNot alchemisable
Crystal triskelion fragment 2.png: RS3 Legio Primus drops Crystal triskelion fragment 2 with rarity Very rare in quantity 1Crystal triskelion fragment 2 (m)P2P icon.png1Very rare[d 1]Not soldNot alchemisable
Crystal triskelion fragment 3.png: RS3 Legio Primus drops Crystal triskelion fragment 3 with rarity Very rare in quantity 1Crystal triskelion fragment 3 (m)P2P icon.png1Very rare[d 1]Not soldNot alchemisable
  1. ^ a b c Triskelion fragments are dropped in order.

Tertiary drops[edit | edit source]

Item Members Quantity Rarity GE price High alch value
Ascension Keystone Primus.png: RS3 Legio Primus drops Ascension Keystone Primus with rarity 1/384 in quantity 1Ascension Keystone Primus (m)P2P icon.png11/384[2]572,051Not alchemisable
Ascension Keystone Secundus.png: RS3 Legio Primus drops Ascension Keystone Secundus with rarity 1/384 in quantity 1Ascension Keystone Secundus (m)P2P icon.png11/384[2]281,942Not alchemisable
Ascension Keystone Tertius.png: RS3 Legio Primus drops Ascension Keystone Tertius with rarity 1/384 in quantity 1Ascension Keystone Tertius (m)P2P icon.png11/384[2]131,227Not alchemisable
Ascension Keystone Quartus.png: RS3 Legio Primus drops Ascension Keystone Quartus with rarity 1/384 in quantity 1Ascension Keystone Quartus (m)P2P icon.png11/384[2]183,078Not alchemisable
Ascension Keystone Quintus.png: RS3 Legio Primus drops Ascension Keystone Quintus with rarity 1/384 in quantity 1Ascension Keystone Quintus (m)P2P icon.png11/384[2]169,891Not alchemisable
Ascension Keystone Sextus.png: RS3 Legio Primus drops Ascension Keystone Sextus with rarity 1/384 in quantity 1Ascension Keystone Sextus (m)P2P icon.png11/384[2]196,360Not alchemisable
Ascension grips.png: RS3 Legio Primus drops Ascension grips with rarity 1/2056 in quantity 1Ascension grips (m)P2P icon.png11/2056[2][3]2,642,92530,000
Ascension signet I.png: RS3 Legio Primus drops Ascension signet I with rarity 1/50 in quantity 1Ascension signet I (m)P2P icon.png11/50[2]Not soldNot alchemisable
Corrupted Ascension signet I.png: RS3 Legio Primus drops Corrupted Ascension signet I with rarity Very rare in quantity 1Corrupted Ascension signet I (m)P2P icon.png1Very rare[4]Not soldNot alchemisable
Starved ancient effigy.png: RS3 Legio Primus drops Starved ancient effigy with rarity Very rare in quantity 1Starved ancient effigy (m)P2P icon.png1Very rareNot soldNot alchemisable
Order journal page.png: RS3 Legio Primus drops Order journal page with rarity Uncommon in quantity 1Order journal page (m)P2P icon.png1UncommonNot soldNot alchemisable
  1. ^ Previously confirmed to be 1/8 by Mod Lee, later updated.[1].
  2. ^ a b c d e f g h Mod Timbo. "Revealing Drop Rates." 13 October 2017. Developers' Blogs.
  3. ^ Dropped only on Slayer task.
  4. ^ Has a base drop rate of 1/1,000, with a threshold of 1,200.

Universal drops[edit | edit source]

Universal drops are dropped by nearly every monster outside of Daemonheim.
These items are dropped alongside main drops.
Item Members Quantity Rarity GE price High alch value
Key token.png: RS3 Legio Primus drops Key token with rarity Rare in quantity 1Key tokenF2P icon.png1RareNot soldNot alchemisable
Mimic kill token.png: RS3 Legio Primus drops Mimic kill token with rarity Very rare in quantity 1Mimic kill token (m)P2P icon.png1Very rare9,002Not alchemisable

Achievements[edit | edit source]

  • I Got This (RuneScore.png 40) – Defeat each of the six Legiones consecutively without leaving the Ascension dungeon.
  • Stand Your Ground (RuneScore.png 50) – Defeat each of the six Legiones without moving.
  • We are legion (RuneScore.png 0) – Obtained a collection of unique drops from Legiones.
  • Descension:
    • Descension I (RuneScore.png 5) – Defeat any of the Ascension Legiones. (X/5)
    • Descension II (RuneScore.png 5) – Defeat any of the Ascension Legiones. (X/10)
    • Descension III (RuneScore.png 5) – Defeat any of the Ascension Legiones. (X/25)
    • Descension IV (RuneScore.png 5) – Defeat any of the Ascension Legiones. (X/50)
    • Descension V (RuneScore.png 5) – Defeat any of the Ascension Legiones. (X/75)
    • Descension VI (RuneScore.png 5) – Defeat any of the Ascension Legiones. (X/100)

Trivia[edit | edit source]

  • Legio Primus is roughly Latin for "First Legion". However Legio is a feminine noun, while Primus is a masculine adjective; the correct form would be Legio Prima. Legions were the largest units of the Roman army and there were 6 in a whole army, hence there are six legiones in the Monastery.
  • A few days after release, the Legio's drop table was updated; drops such as bowstrings were replaced with more valuable items such as the magic shieldbow (u), and the drop rate of the signets were increased from 1/64 to 1/50.