mangosR2/mangos — comment on commit 663b277addfbddaa0b867297a766f691ddeccb53
File:  line 0
By Reamer:

take a look into this script
https://github.com/Reamer/scriptdev2/blob/master/scripts/northrend/utgarde_keep/utgarde_pinnacle/boss_svala.cpp
here the last scriptname is triggerd form svale spell. You must make an record for this spell in an specific table(at the moment i don't know the name) with scriptname. Then you can use this for a special script start. In my example: the flames npc cast flame ball.
I hope that helps you, if not ask again^^