Mortal Contract

If successfully cast, pick 1 enemy unit within range and visible to the caster. For the rest of the battle, roll a dice at the end of each phase during which any attacks made by that unit inflicted any damage on a friendly OSSIARCH BONEREAPERS unit. On a 3+, that enemy unit suffers D3 mortal wounds. You cannot pick the same unit to be the target of this spell more than once per battle.