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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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All information on mechanics, setups, and strategy are on the subpage.
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Legio Primus chathead

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 signaled by an overhead chat message.

Drops[]

100% drops[]

Item Quantity Rarity GE price
Ascension shardAscension shard16–26Always4,096–6,656

Charms[]

No charmGold charmGreen charmCrimson charmBlue charm
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[]

Item Quantity Rarity GE price
Coins 10000Coins37,000–40,000Common37,000–40,000
Coins 10000Coins57,000–60,000Uncommon57,000–60,000
Grimy snapdragonGrimy snapdragon10Common17,890
Grimy avantoeGrimy avantoe10Common10,430
Grimy dwarf weedGrimy dwarf weed5Common42,380
Grimy lantadymeGrimy lantadyme5Common37,755
Grimy torstolGrimy torstol5Uncommon26,945
Dwarf weed seedDwarf weed seed2Common1,644
Lantadyme seedLantadyme seed2Common1,452
Torstol seedTorstol seed1Uncommon540
Rune platebodyRune platebody(noted)Uncommon74,960
Dragon longswordDragon longsword1Uncommon56,212
Off-hand dragon longswordOff-hand dragon longsword1Uncommon55,396
Sirenic scaleSirenic scale1Uncommon[1]698,722
Rune barRune bar4Uncommon11,940
Magic shieldbow (u)Magic shieldbow (u)45–55Common18,315–22,385
Dragon arrowheadsDragon arrowheads30–60Common8,310–16,620
Rune arrowheadsRune arrowheads80–120Common10,560–15,840
Onyx bolt tipsOnyx bolt tips1–11Uncommon7,107–78,177
Crystal triskelion fragment 1Crystal triskelion fragment 1[2]1Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 2[2]1Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 3[2]1Very rareNot sold

Tertiary drops[]

Item Quantity Rarity GE price
Ascension Keystone PrimusAscension Keystone Primus1Rare (1/384)[3]633,433
Ascension Keystone SecundusAscension Keystone Secundus1Rare (1/384)[3]403,433
Ascension Keystone TertiusAscension Keystone Tertius1Rare (1/384)[3]283,299
Ascension Keystone QuartusAscension Keystone Quartus1Rare (1/384)[3]266,819
Ascension Keystone QuintusAscension Keystone Quintus1Rare (1/384)[3]283,222
Ascension Keystone SextusAscension Keystone Sextus1Rare (1/384)[3]279,941
Ascension gripsAscension grips1Very rare (1/2,056)[3][4]5,259,669
Ascension signet IAscension signet I1Rare (1/50)[3]Not sold
Corrupted Ascension signet ICorrupted Ascension signet I1Very rare[5]Not sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold
Order journal pageOrder journal page1UncommonNot sold
  1. ^ Previously confirmed to be 1/8 by Mod Lee, later updated.[1].
  2. ^ a b c Triskelion fragments are dropped in order.
  3. ^ a b c d e f g h Mod Timbo. "Revealing Drop Rates." 13 October 2017. Developers' Blogs.
  4. ^ Only while on a Slayer assignment.
  5. ^ Has a base drop rate of 1/1,000, with a threshold of 1,200.

Universal drops[]

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold
Mimic kill tokenMimic kill token1Very rare5,575

Feats[]

  • I Got This (RuneScore 40) - Defeat each of the six Legiones consecutively without leaving the Ascension dungeon.
  • Stand Your Ground (RuneScore 50) - Defeat each of the six Legiones without moving.
  • We Are Legion (RuneScore 0) - Obtained a collection of unique drops from Legiones.

Trivia[]

  • 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.
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