Would it be too powerful to make quests activate on start of game? Not taking up a mulligan card or turn one?

Or you play it and on Turn 5 molten giant. It can be useful to reduce your health too, not just heal. Usefulness will depend on other cards that interact with warlock having less than 15 health.

Lots of cards didn’t see play because year of mammoth , dks and Baku glen was too strong. Things will change

Swapped witch doctor for upgrade. Works well