How can i do a creaturescript file send a spell?

[VictorOtInfinit]

I'm doing Scarlett Etzel boss, and i'm on the last thing. I want to know how can i do this in creaturescripts:

Monster receive damage.
Monster cast a spell.

Any clue?

 

[Evil Puncker]

OnHealthChange event to check the received damage
doAreaCombat/doTargetCombat to simulate a spell