Cloven Casting Cloven Casting might look expensive at 7 mana, but once its on the board, it turns every multicolored instant or sorcery into a double threat
While this deck only runs one copy of this Sing Together song, getting it off even once in a game can turn the battle in your favor
3 Sauron, the Dark Lord Someone get this guy some eye drops
Taking a random one-drop wont stop them from casting two more, and they have enough game-winners that discarding those is rough even when the spent mana doesnt just mean you lose to 1/1 beatdown
They often employ Food Chain + Misthollow Griffin to generate infinite mana and draw their deck with Atraxa
Most famously, Collector Boosters feature the colored versions of the Traveling Chocobo cards, the iconic bird mounts from FF, each trading for a couple thousand dollars