Haunt - If this monster has zero or one action token, if an adjacent opposing monster is given a move action and moves, at the end of that monster's movement you can put this monster in a space adjacent to the opposing monster. If you do, give this monster an action token.
Blood Scent -
If this monster begins its move within 3 spaces of an opposing monster, modify its speed value by +2.
Trample (Agony) -

This monster gets +1 to its damage value for each action token on the target.
Vex (Immobilize) -

Instead of making an attack, give an adjacent opposing monster an action token.