OK, I got a bit annoyed with LoH last night in a session with a dracolich vs. a level 18 party. I'm the DM and I couldn't do squat to down the paladin. She must have spent 5-6 LoHs in the fight. I think it makes LoH stronger than any Leader's healing. I think it should have a per encounter cap as well as the per day cap it currently is designed with.