Voracious Maw

Voracious Maw is a spell that has a casting value
of {7} and a range of 18". If successfully cast, pick
1 enemy unit within range and visible to the
caster. That unit suffers D3 mortal wounds.
Then, roll a dice. On a 1-3, the maw is satisfied
and the sequence ends. On a 4+, that unit suffers
D3 mortal wounds. Keep rolling dice in this way
until the maw is satisfied or the target unit is destroyed.