As I recall, it was mentioned in MaRo's podcast that Memnite was specifically moved to uncommon rarity because it could result in absurd hyper-aggro/high-roll scenarios in limited. This card to me btw seems like a generally better version of Memnite, which is a bit insane, and plays even more into that aforementioned high-roll scenario of multiples of these coming out before the opponent react properly. It's virtually a 1/1 basically at least as far as attacking goes which I is a far assumption with this type of card. More likely it's about an average of a 2/1 or 3/1 throughout the game I would say, but it could certainly reach say 7/1. All of this is just bonkers for a 0-cost card and even more so for a common.