Voracious Maw

If cast pick 1 enemy unit within 18" of the caster
that is visible to them. That unit suffers D3
mortal wounds. After resolving any damage,
roll a dice, on a 1-3 , the maw is said to be
satisfied and the spell ends. On a 4+, the
target unit suffers D3 additions mortal
wounds. Keep repeating this process
until the maw is satisfied or unit is distroyed.