For Death and Decay, I replaced the 'effect' field under stats with Earthquake (Effect). Problem is that it will make multiple effects so that it creates the effect up to 35 times. Is there a simple way to change this, or should I just trigger the special effect?
Trigger it. Just remember to destroy the effect when the caster stops channeling, not after a set time, since it can be canceled (err..it CAN be canceled right? Didn't play Undead much back in my melee days =P).
Yup, already finished it, just made it add the effect, wait until "(current order of (triggering unit)) no equal to (deathanddecay)" then destroy the effect after the wait.