Cauldron of Souls [Commander Anthology Volume II] Snake Whenever an opponent casts a

Whenever an opponent casts a creature or planeswalker spell with the same name as a card in their graveyard

Set: Commander's Arsenal Type: Legendary Creature — Human Advisor Rarity: Rare Cost: {3}{R} {T}: Destroy target creature of your choice

"My eyes are my strongest feature

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} {T}: Add {C}{C}

then repeats this process until a creature card or X cards have been put into their graveyard this way

Cauldron of Souls [Commander Anthology Volume II] Snake Whenever an opponent casts aSet: Commander Anthology Volume II Type: Artifact Rarity: Rare Cost: {5} {T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no 1 1 counters on it, return it to the battlefield under its owner's control with a 1 1 counter on it.)