Iridian Maelstrom How many of the people in your play pod run 5-colored decks
Once a true Standard stable, The Great Henge is currently only played in Commander, but its amazing in that format
Blue Bottomless Pool/Locker Room If you havent played with Rooms yet, I highly recommend giving them a shot, so why not start with Bottomless Pool // Locker Room
If a creature under the effects of the first chapter ability can't attack for any reason (such as being tapped or having come under your control that turn), then it doesn't attack
If a card cannot fit into a sleeve and must be forced, its best to stop and find new sleeves
Valki, God of Lies // Tibalt, Cosmic Imposter Modal Double-Faced Cards have been one of my favorite design additions to Magic in a long time