1 Bladeback Sliver
Kotis, Sibsig Champion One black, one green, one blue legendary creature - Zombie Warrior - 3/3 - Mythic Rare Once during each of your turns, you may cast a creature spell from your graveyard by exiling three other cards in your graveyard in addition to paying its other costs
While Modern and Legacy players are theoretically so invested in the game that they won't quit based on a banning (especially when the banning improves the format), if someone buys their first Standard deck and it's suddenly banned, it's very possible that these players will give up on the game altogether
However, while it is a bit of a roundabout strategy, in conjunction with cards like Repay in Kind, Reverse the Sands, and Near-Death Experience, Selenia can use her ability in order to devastate opponents' life totals
Even then, three colors is a lot to ask for, especially in the aggressive colors of the game, so I dont see this coming together
Unleash the beauty of Pokmon artwork with this 18-Card Complete Art Rare Collection Set