The only +3|+0 card is Steam Machine, which is way more expensive (mainly dual Fire quanta for growth), so that doesn't work.
The card is OK, comparing with similar ones.
The thing is though, Growth cards are bad, because you just can't really build competitive decks based on them (face it, Lava Golem is used mostly for the high starting damage), so most of them seem rather underpowered, while the game is just not suited for them.