"Tertius" redirects here. For the keystone, see Ascension Keystone Tertius.
For the pet version, see Legio Tertiolus.
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Legio Tertius chathead

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

As with all the bosses in the Monastery of Ascension, Legio Tertius 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 Tertius 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 he summons other ascended to aid him throughout the fight. As with all other Legiones, his special ability's activation is signaled by an overhead chat message. In total, he summons three Rorarii at 75% life points, one Gladius at 50% life points, and finally a Capsarius at 25% life points remaining. Once the capsarius uses it healing buff on Tertius, it will need to be killed - though it is possible to kill Tertius before the capsarius focuses on him, using a combination of high-level weapons and powerful, well-timed abilities. The ascended he summons do not drop anything. When Tertius dies, all his summoned ascended also die.


100% dropsEdit

Item Quantity Rarity GE price
Ascension shardAscension shard16–26Always4,608–7,488


No charmGold charmGreen charmCrimson charmBlue charm
Represents a 90% confidence range based on a sample of 500 kills.
6 charms are dropped at a time.
Add data to the log (requires JavaScript).

Main dropEdit

Item Quantity Rarity GE price
Coins 10000Coins37,000–40,000Common37,000–40,000
Coins 10000Coins57,000–60,000Uncommon57,000–60,000
Grimy snapdragonGrimy snapdragon10Common34,970
Grimy avantoeGrimy avantoe10Common24,280
Grimy dwarf weedGrimy dwarf weed5Common14,720
Grimy lantadymeGrimy lantadyme5Common21,320
Grimy torstolGrimy torstol5Uncommon24,145
Dwarf weed seed 5Dwarf weed seed2Common1,896
Lantadyme seed 5Lantadyme seed2Common2,106
Torstol seed 5Torstol seed1Uncommon1,830
Rune platebodyRune platebody(noted)Uncommon74,162
Dragon longswordDragon longsword1Uncommon55,279
Sirenic scaleSirenic scale1Uncommon[1]360,051
Rune barRune bar4Uncommon55,220
Magic shieldbow (u)Magic shieldbow (u)45–55Common24,390–29,810
Dragon arrowheads 5Dragon arrowheads30–60Common9,030–18,060
Rune arrowheads 5Rune arrowheads80–120Common15,680–23,520
Onyx bolt tips 5Onyx bolt tips1–11Uncommon6,573–72,303
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 dropsEdit

Item Quantity Rarity GE price
Ascension Keystone PrimusAscension Keystone Primus1Rare260,207
Ascension Keystone SecundusAscension Keystone Secundus1Rare189,250
Ascension Keystone TertiusAscension Keystone Tertius1Rare87,445
Ascension Keystone QuartusAscension Keystone Quartus1Rare114,466
Ascension Keystone QuintusAscension Keystone Quintus1Rare87,169
Ascension Keystone SextusAscension Keystone Sextus1Rare119,619
Ascension gripsAscension grips1Very rare[3]2,182,826
Ascension signet IIIAscension signet III1Rare (1/50)[4]Not sold
Corrupted Ascension signet IIICorrupted Ascension signet III1Very rare[5]Not 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. ^ The Ascension grips can only be received as a drop if the player is on a slayer task.
  4. ^ Mod Daze. J-Mods - Can you help us put an end to the Ascension Signet drop rate debate?. 16 February 2017.*
  5. ^ Has a base drop rate of 1/1,000, with a threshold of 1,200.

Universal dropsEdit

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


  • Legio Tertius is roughly Latin for "Third Legion". However Legio is a feminine noun, while Tertius is a masculine adjective; the correct form would be Legio Tertia. 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.
  • Legio Tertius' summoned ascended did not die with him prior to an update on 29 June 2015 - players had to kill them after he died, or leave the room and create a new instance.

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