Boon of Mutation

Has a casting value of 7. If successfully cast, pick
1 enemy unit within 18" of the caster and visible
to them. That unit suffers D3 mortal wounds.
For each model that is slain by mortal wounds inflicted by this spell, you can add 1 Tzaangor
model to an existing Tzaangor unit in your army.
If you do so, set up that Tzaangor model within
1" of a friendly Tzaangor unit that is within 12"
of the caster. The model can only be set up within
3" of an enemy unit if the friendly unit was within 3"