The Necromancer starts channeling and draws a pentagram of fire on the ground. When the pentagram is complete skeleton warriors is raised from all the corpses within the pentagram.
I think I read somewhere that the wait function can't be set lower than a certain value so if you want it to cast faster (draw the star faster) I guess you could make it draw the star a once or decrease the number of fires. And yes the raise dead thing could be removed and changed into something else. If you explain what you wan I could see what I can do.