Fiery Convocation

If successfully cast, pick 1 enemy unit within 18"
of the caster and visible to them. Until your next
hero phase, at the end of each phase of a turn,
roll a dice for that unit. On a 6, that unit suffers
D3 mortal wounds.
The caster brings fiery destruction to the foe,
engulfing them in flames that only very slowly
burn out.