Arcane Bolt

The caster calls forth a ball of crackling arcane energy
that hovers above their outstretched hand, ready to be hurled at a foe.
Arcane Bolt is a spell that has a casting value of 5
and a range of 12". If successfully cast, at the start
of any 1 phase before your next hero phase, you
can pick 1 enemy unit within range and visible to
the caster. That unit suffers 1 mortal wound. If
that unit is within 3" of the caster, it suffers D3
mortal wounds instead of 1.