Hydra Head

Hydra Head
Medium natural magical beast (aquatic) 	Level 5 Brute
200 XP
HP 75; Bloodied 37 	Initiative +4
AC 17; Fort 18; Ref 17; Will 17 	Perception +4
Speed 4, swim 4, special 	All-around vision, darkvision
Vulnerable 5 acid, 5 fire
Traits
Cauterize
If Hydra Head has taken fire or acid damage since the start of its last turn, ignore the effect of Regrow Heads. If Hydra Head takes fire or acid damage that reduces it to 0 or fewer hit points (even if it was already at 0 or fewer), the stump is burned closed, Hydra Head dies, and permanently loses Regrow Heads.
Joined At The Hip
Hydra Head can always move through its Hydra Body or other Hydra Heads, and always receives a free action to move in the same speed and direction as its body, even if immobilized. Hydra Head must at all types remain adjacent to its Hydra Body. Any forced movement that would violate this automatically fails, unless it also deals untyped damage, which instead causes the head to be torn off. It is immediately reduced to 0 hit points and triggers Regrow Heads.

Hydra Head dies immediately if its Hydra Body ever dies.
Minds of their Own
Hydra Head is considered to be the same creature as Hydra Body for any effects that target an individual creature, except mind-affecting abilities, which must target each head individually.
Regrow Heads (regeneration)
When Hydra Head is reduced to 0 hit points or fewer by an attack that deals untyped damage (even if Hydra Head was already at 0 or fewer), it is replaced it with two Hydra Heads that act on the same initiative order as the replaced head.

Any heads that would grow that would increase the number of currently-existing heads above twice their starting number do not have enough blood flow to function properly, and die immediately. (This does not trigger another Regrow Heads.)
Threatening Reach
Hydra Head can make opportunity attacks within two squares of it.
Standard Actions
Bite ♦ At-Will (basic attack)
Attack: Melee 2; +10 vs AC
Hit: 2d6+6 damage.
Triggered Actions
Snapping Jaws ♦ At-Will
Trigger (no action): An enemy ends its turn within 2 squares of Hydra Head.
Effect (Free Action): The hydra head uses Bite against the triggering enemy.
Skills Stealth +9
Str: 18 (+6)
Con: 15 (+4) 	Dex: 15 (+4)
Int: 2 (-2) 	Wis: 14 (+4)
Cha: 8 (+1)
Alignment unaligned
Languages -
Tactics All Hydra Heads will prioritize above all other things attacking fallen Hydra Heads with their Bite attacks, to trigger Regrow Heads. This is an instinctive response, rather than a deliberate tactic. All heads have a mind of their own, and heads that are low on HP (but not yet at 0) will not allow themselves to be cannibalized, even if it would be beneficial for the hydra as a whole.