Hearthpwn

At worst it's a 2/3 that summons a 1/1. It's a bit worse than harvest golem, but since the 1/1 is a boombot, bomb wrangler is better. Not to mention that it has the potential to summon multiple boombots. Its probably one of the better self damage synergy cards, but even in Wild, there isn't much support for a self damage deck (Closest you'll get is Patron Warrior)