The problem I personally have with it is it robs you of the sense of skill when you do the math and do roll the right totem. I am okay with the punishment if the reward is decent, but the reward isn’t. I think if priest and warrior can have similar hero powers, I don’t see why Shaman and warlock can’t. the problem is it’s hard as heck to balance.
1 mana draw a card overload:1 is way too op
2 mana draw a card overload1 is a bit weak. Mathematically it’s balanced but I think 2 health< 1 overload
1 mana draw a card overload 2 is the only way that seems balanced,but 1 mana hero power is weird.