Zombie Desecrator

Trigger A creature within the monster's reach uses a manipulate action or a move action, makes a ranged attack, or leaves a square during a move action it's using. Effect The monster attempts a melee Strike against the triggering creature. If the attack is a critical hit and the trigger was a manipulate action, the monster disrupts that action. This Strike doesn't count toward the monster's multiple attack penalty, and its multiple attack penalty doesn't apply to this Strike.

The zombie desecrator moves mindlessly forward without fear of pain. It Strides twice, ignoring any difficult terrain during its movement. At the end of its movement, the zombie takes 1d6 bludgeoning damage for each square of difficult terrain it entered while Trudging.