Tempo Mage can run Kirin Tor Mage + Mirror Entity + This guy, setting up a devastating amount of tempo in t5. Likely game-winning.
It's also a great removal for freeze mage and even a playable card in exodia mage (lul). I mean, it's for sure the strongest common card of this release - and the one that will have more impact on lists.
not sure about his viability in standard, secrets are a big tempo loss when you can't accelerate them, like even the class with1 mana secrets doesn't run them and this card comes during a crucial turn in the game after a turn 3 where you basically did nothing, that said, completely bonkers in wild. SUicide my mad scientist into killing the first bodd of a shredder sounds super amazing.