Theres also Corrupted Conviction, a functional reprint, if you need two copies of these effects in EDH
While I dont think Vivi is on the level of anything currently on the banlist, it does feel like a card that could be central to a future broken deck, especially if Mox Opal becomes part of the equation again
Aggravated Assault is a great mana sink late in the game once you have an established battlefield to close out a game
It reads, At the beginning of combat on your turn, equipped creature or a creature you control named Vecna gets +X/+X until end of turn, where X is the number of cards in your hand. Finally, The Book of Vile Darkness is a three mana Black Artifact that lets you create a 2/2 Zombie token if you lost two or more life in your turn
Usually, thats a death sentence at this level
Originating from the mini-game in The Witcher 3: Wild Hunt, Gwent was developed into a standalone digital card game due to its popularity