Keep in mind that this pulls 1-attack minions, so you can tutor stuff like Kangor, Bolvar, Meat Wagon, Framebot/Gatekeeper, Stonehill Defender, and maybe Lynessa?
Oh wow, I badly misread that. I thought it was 1-cost. Okay, so there's that, I guess. I'm not sure how many of these higher-cost minions with 1 attack are very good, but hitting the three 1-attack mechs you mentioned makes this card viable. Summon a Meat Wagon, hit it with a buff, summon more stuff when it dies. Sounds okay-ish. Not broken, but something to play with.
You still arent reading the card correctly I think. You DRAW them.