Gift of Change

Has a casting value of 8. If successfully cast, pick
1 enemy unit within 18" of the caster and visible
to them. That unit suffers a number of mortal
wounds equal to the Gift of Change value shown
on the caster's damage table. If any models were
slain by this spell, before removing the first slain
model, you can add a Tzeentch chaos spawn to
your army and set it up within 3" of the slain
models unit.