[thejeff]

Right. How does that contradict what Bananadine said?

For pretenders and prophets max hp changes with dominion. If current hp is above max hp (due to dominion or life drain or anything else), it will gradually drop to max hp. I believe it takes several turns, but I'm not sure of the exact formula.

That's what you saw. Low max hp, much higher current hp. You do have to work your way through all those hp, but effects like regen work off of, and only up to, the max.