Offal Bringer

If successfully cast, pick 1 enemy unit within range and visible to the caster. Your opponent must make a move of up to 6" with that unit. All of the models in that unit must finish that move as close as possible to the caster and can finish that move within 3" of the caster. If it is impossible for that unit to make the move, it suffers D3 mortal wounds instead. After that unit has moved, if that unit is within 3" of the caster and the caster is within 6" of a Mawpit in your army, you can immediately use the Mawpit's Head Butcher ability, but you must pick that enemy unit to be the target.