If we can keep Teferi off the board, Didn't Say Please and Thought Collapse allow us to play a weird control-mill game, where we try to stick a copy or two of Drowned Secrets, always leave up a counterspell for whatever threat our opponent might have (while hopefully using the rest of our mana to cast cheap mill cards during our turn), and slowly mill away our opponent's library as we counter their threats
If your choice somehow ends up with an instant or sorcery card as the back face of Werewhat, Werewhat would be unable to transform away from its daybound side, so it would remain daybound even if it's night
You'll be gaining a ton of life, all while burning the opponents as they try to get rid of it
A 36-pack box gives 12 prize packs
18 Rat King, Pale Piper You could do worse than have Rat King, Pale Piper as your rat Commander
This is a pretty damn good flavor for the deck as AC Valhalla was a less stealthy type of game with much more Viking open combat