Warp Lightning Storm

Warp Lightning Storm has a casting value of 7. If
successfully cast, pick up to D3 enemy units within
13" of the caster and visible to them. Those units
each suffer D3 mortal wounds. Before making the
casting roll, you can say that this model will use its
warp-power accumulator to augment the spell. If
you do so and the casting attempt is successful and
not unbound, the spell inflicts D6 mortal wounds
on each of those units instead of D3. However, if
you do so and the casting attempt fai