Advent of Ascension Wiki

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Advent of Ascension Wiki
Health 78 (♥×39)
Size Width: 1.0 blocks
Height: 1.75 blocks
Damage Easy: 4.75 (♥×2.375)
Normal: 7.5 (♥×3.75)
Hard: 11.25 (♥×5.625)
Environment Precasia
Hostility Hostile
XP Xp Orb.png 14
Knockback Resistance 15%
ID aoa3:iosaur
Version added 1.0

The Iosaur is an aggressive melee mob that appears in Precasia.


Iosaurs spawn in Precasian Underground Dens.

They will despawn if the player gets too far away from them, or if the difficulty is set to Peaceful.


Iosaurs are melee mobs that will follow targets both on land and in water. They will initially attempt to avoid getting into the water where possible, but will go in if they find no other path to their target.

They are aggressive, and will attack nearby players within 16 blocks without provocation. If attacked by another entity, they will retaliate and continue targeting that entity.

They apply Poison III to the player on hit, which lasts for 3 seconds.

Staying outside of their targeting range will prevent them from attacking or targeting entities.


Entity loot
Item Quantity Chance
Precasia Table 1 100.0%
The above pool is rolled 1 time
Nothing - 36.4%
Legbone Sword.png Legbone Sword 1 2.5%
Leather.png Leather 1-4 10.9%
Footbone Fragment.png Footbone Fragment 1 9.8%
Legbone Fragment.png Legbone Fragment 1 9.8%
Chestbone Fragment.png Chestbone Fragment 1 9.5%
Skullbone Fragment.png Skullbone Fragment 1 9.1%
Bone.png Bone 1-3 12.0%
The above pool is rolled 1 time