(Psi)SeveredHead
Adventurer
One thing I have considered is changing all durations to save ends... consistancy is your friend when it comes to tracking - additionally attendant minions can use there actions to grant an extra valuable save (see heal check) ie.. must deal with minions before disabling big bad or its rarely disabled even partially for very long
Why did I never think of that? Yoink! (The closest I came to that was NPCs using Sacred Flame.)