You can roll your characters healing Ysariel. And yeah, Selective Channeling is a useful feat, but not as useful in an undead heavy campaign. Still, as you just saw now, not every enemy you will meet is going to be undead.<br/><br/>Edit: Also Ebron, do you have a special effect/option for hitting with an AoO? I rolled for you and you hit and damaged the priest, but maybe I missed something?