Sister Mabelle is in excellent shape (100%).

You are done with the chant.
You clap your hands together and say 'fah mar nak grttzt' (Lava blast)
You pull out a granite sphere which bursts into a zillion technicolour
sparkles!
You watch with self-pride as your lava blast hits Sister Mabelle.
You feel like your spell gained additional power.
The air is filled with pure energy and crackles with power.
Unseen BURSTS of magic are absorbed into the spell!
Sister Mabelle screams in pain.
The skull draws some power from the kill.
A large cavity replaces Sister Mabelle's chest.
Sister Mabelle is DEAD, R.I.P.