speaking of
Can this be fair in a lower powered format? Part of me feels that this is a bit of a boogeyman, and might be reasonable if a cube doesn't have a lot of combo support for it.
Maybe I lack imagination, but assuming you have no ways to "go off" with it, this feels like a very reasonable low power substitute to a control finisher like aetherling. It untaps lands so you can protect it from removal (assuming they don't kill it in response to the trigger. It has evasion. Its kinda big. It can fog an attacker if you're desperate. My only worry would be someone might pick it hoping to find a miraris wake when you don't support those kind of shenanigans.