Synergies pretty well with Bloodmage, Kobold and overall shaman, maybe judicar could help finding a spell totem. It's basically a 3 Mana volcanic drake if you have spell damage.
Mage can turn 3 coin soot spewer, or priest with velens on the coin can get this out turn 3 (assuming they use it on a chow or northshire). Shaman is still probably the best class to play this in, although shaman is very clogged for 3 drops atm.
There aren't many minions that have Spell Damage that are viable in the meta, or see play at all. Unless they introduce a slew of spell damage minions, we might only see this in Shaman as their Hero Power makes it so they get Spell Damage often.