If Locker Room is worth a third of a card I could see Bottomless Pool being worth it, but I suspect Locker Room will be worth less than that
Although some Disney Lorcana cards are all about reinterpretation, there's plenty of value in going straight to the source
Clever Concealment Chief: Commander is a format where cards such as Blasphemous Act, Toxic Deluge, and Cyclonic Rift see heavy play
Alternatively, for four mana, Jace can mill fifteen cards, which is obviously pretty devastating
If you sacrifice other permanents at the same time, it triggers for them as well
Ugin's Labyrinth helps smooth out early draws by providing a quick mana boost for powerful early game interaction like Chalice of the Void, which can shut out some strategies altogether