If you use the command "cdonk" you will use the attack for the rest of the fight with no need of triggers. When you change guild you will probably want to set up a trigger for the special attack.

Kvator wrote:but there is such quest already i believe

Kvator is correct. Carlsans (The guy 1 south from the Sparkle church) like fourth tour is to find Xorfin and Xania.