If I had to push as far as realistically possible to create a mech perfect for being a magnetic target, it would have been this. Super cheap, super durable, and yet not abusable by aggro. Great design.
I hope magnet warrior/paladin/hunter actually becomes a thing.
I don't think it's very good unless a deck pops up that is built entirely around mech synergy. Even then, it's probably not great. Seems like a strictly worse Druid of the Swarm unless you're relying on the mech tag.
Every deck that uses snowballing cards will use this, its great with fungalmancer, coldblood, cobalt scalebane, acherus veteran, defender of argus, keleseth, etc. Not to mention that this will be a staple in every mech deck that focuses on tempo. I voted metadefining.