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"Tertius" redirects here. For the keystone, see Ascension Keystone Tertius.
For the pet version, see Legio Tertiolus.
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All information on mechanics, setups, and strategy are on the subpage.
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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.

Drops[]

100% drops[]

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

Charms[]

No charmGold charmGreen charmCrimson charmBlue charm
41–46%13–16%9–12%16–20%12–16%
Represents a 90% confidence range based on a sample of 1,058 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 IIIAscension signet III1Rare (1/50)[3]Not sold
Corrupted Ascension signet IIICorrupted Ascension signet III1Very 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 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.
  • Some time after the release the drop rate of the signet was increased from 1/64 to 1/50.
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