The double-faced cards from Zendikar Rising like Silundi Vision are already pretty amazing but get much more value in this deck, since if you play them as lands early in the game, you can always pick them up later with a Moonfolk activation if you need the spell side
Waiting to gain life from Wall of Reverence, another end of turn trigger, wont work because we have to choose the target when we put Celestines ability on the stack
Along with cards from the Legends expansion, Dominaria United will also celebrate its 30th anniversary with reimagined versions of old, out-dated Legends characters, such as Ramirez DePietro and Jasmine Boreal
Blue control decks are full of counterspells, card drawing and removal
A creature with unleash can't block if it has any +1/+1 counter on it, not just one put on it by the unleash ability