Only one way to find out, and that's to do what we always do on Innistrad: ignore the consequences and charge right into the darkness with no regard for personal safety or preparation whatsoever and why are you thinking let's just go Day & Night, Daybound & Nightbound Not everything on Innistrad is as it seems
Currently, the converted mana cost of a split card is simultaneously both of the converted mana costs of each half
It becomes a lot more difficult to win with Thassas Oracle if your graveyard gets shuffled back into your library and Underworld Breach wont do much if your opponent doesnt have a graveyard
Now youre left with a three-mana 3/3 with a low-impact ability
This thing is skippable draft chaff, but maybe I'll sneak room for this in my Ovika, Enigma GoliathOvika, Enigma Goliath deck
Thats the day you receive your wildcard refunds