You are done with the chant.
You kneel down squeezing Crosier of Angel and recite (holy bolt)
Surges of holy force coil around your Crosier of Angel forming a sparkling
bolt of divine energy. You twist your wrist and bolt hurls through the air
detonating on Green Slaad.

Holy white flames dances around you.

Old nun arrives in a puff of smoke and mutters, 'You have slain down all the
slaads within one day. Magnificent, you remind me of myself when I was at your
age. Ah, your reward, here is a key that I confiscated from a fiend. I am too
old to find out which door this key fits in.. although I have a pretty good
idea. Good luck, may Las guard your journey.'

Old nun gives you a key.

* CONGRATULATIONS! You have completed nun task 'Slaad hunt'*

Green Slaad suddenly stops breathing and jerks a couple of times violently,
then falls to the ground, lifeless.
Green Slaad is DEAD, R.I.P.

Thanks to Living the mighty libbe!