Bone hydra

The bone hydra is a level 77 undead found in tier 4 runs from Dormant's Rest. It attacks on sight. It fights hand to hand, so spells have the edge on it and a bow is at a disadvantage.

Fighting it

It hits up to 20 and has 180 hitpoints. It notices you from about 7 tiles away, and it stops bothering you once your combat level is more than double its own. A kill is worth 954 XP, split across the combat skills you used.

It appears in generated runs at tiers 4 to 6, with one form per tier, each larger and stronger than the last.

Its other forms: tier 5 · tier 6. Every form is in the run pool.

Drops

Item	Quantity	Chance
Bones	3 to 6	Always
Coins	45 to 170	80%
Wraith sigil	2 to 6	25%
Arcanite bar	1 to 2	15%