Ability should cost 3 random, and that'd be better. That's 3 random to add 1 max HP.
sure about that? shard of divinity costs 3 random and adds 20 to max HP
stone skin costs 7 and gives upto 50 max HP,
I think three sounds a bit much, maybe 2 or 1?
Even with a 60 card deck it's not likely to get that much max HP