@bazaarofbaghdad Regrowth into is a common play because you net +1 mana (it's not Manamorphose which nets 0 mana). I also mentioned PWs - but there's also artifacts, which are common hate in the format. Anyway, Regrowth is zero played, so this is almost a non-discussion because we're just spitballing what it could do, not what it actually does in the format.
I disagree that UU is easy for a deck to support. 1U is because of Moxen. UU is hard. Nowadays almost every spell we play costs just U so tapping that extra UU pseudo-doubles the cost of this. I'm not saying 1G is easy, but I this both are just as problematic.
About Snapcaster, I meant it'll never replace it as a staple card. Come on. EVERY card can be better than another if you craft a perfect scenario/deck for it.
I'll nod that this is easier than Regrowth to chain Gushes. Gro-a-tog would've loved this in the 2000s. Right now the cost feels steep and hard to pay for an effect no one really wants right now.