Doomseeker

Effect: Add 1 to the Damage characteristic of this unit's melee weapons while this unit has 1 damage point. Add 2 to the Damage characteristic of this unit's melee weapons instead while this unit has 2 or more damage points.

Declare: Pick an enemy unit to be this unit's quarry. You can pick a unit that has been deployed in reserve.

Effect: Add 1 to hit rolls and wound rolls for attacks made by this unit that target its quarry. 
If this unit is destroyed while it is in combat with its quarry, inflict 3 mortal damage on this unit's quarry immediately after the ability that destroyed this unit has been resolved.