Much like last week's Five-Color Shrine deck, Rin and Seri Cats & Dogs was way better and more powerful than I thought it would be, but I'm not sure it can be truly competitive in Standard because the top couple of decks in the format (Bant Mythics and Temur Reclamation) are so powerful and punishing, while Ugin, the Spirit Dragon is also a blowout if we can't kill our opponent before it hits the battlefield
Mega Rising Museum 3 'Mega Rising Museum 3' tasks you with collecting all of the full artwork cards inside the Mega Altaria booster packs
It can get a Ghost Quarter, or an Ancient Tomb, or a Cabal Coffers
#15 "This shuffling around will help even out the size of the sets"
This is very Commander-coded, but so much fun there
Historically, Decks would use the original three members - "Red", "Green", and "Yellow Gadget" - for constant card advantage and recursion, which was rare at the time