"I'm going to hit you with a blast of energy from my staff...but wait, I've also applied a poison to the staff....which means you'll be hit by poisoned energy."
He said as he rode through the city on what is essentially a small dinosaur, whilst wearing a disguise that immediately disappeared when he attacked / was attacked (but only if the attacking / attacked party was from the faction the disguise related to).
Eh....I think I'll just go with the flow for now. Obviously there is no reason one cannot apply poison to energy blasts.