As far as deck-out is concerned, this card has a few advantages over eternity. The largest is that you can free the weapon slot without using an animate weapon, in which case you'd probably need a quint too. However, it also removes the need of protect artifact. Sure, your pulverizer may be blown up, but at least that doesn't cause you to deck out.
With eternity, you have to rewind a creature every turn. With this card, just toss out a few, possibly even with a fractal, and you're set for several turns assuming they're all killed. While this may not really help with the situation in-game, other than that little extra bit of damage, it saves the player some clicking and gives some slack in case they forget to rewind. It's not major, but it's something.
Against AI, this card will also draw out some CC. Though this advantage is probably lessened by that it'll be low priority meaning you either play it early while it's the only creature, therefore slowing down your draw/quanta, or at the end when your creatures are all protected/dead anyway.
Any deck designed to incorporate this card shouldn't have a problem being able to kill it every turn though. Having a weapon to use probably outweighs devoting one creature to ensuring the death of this card every turn.
On the other hand, I realized that the upgraded version is far less reliable for avoiding deck-out because the only guaranteed method is by poisoning it or smashing it against an opponent's fire shield. If you kill it during your turn, it'll just go back to your hand and you'd have to discard anyway. The unupgraded version balances this with an extra cost, but that doesn't make either version more powerful.
I might increase the attack a bit to make it an essentially immortal attacker, but again, at the disadvantage of slowing down card draw/quanta pooling.
