Memory Jar [From the Vault: Relics] Exodus that player chooses target player

that player chooses target player whose graveyard has fewer creature cards in it than their graveyard does and is their opponent

then destroy target creature of an opponent's choice

I'd have told you what it was

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} As Black Vise enters the battlefield

that player sacrifices a permanent unless they pay {1}

Memory Jar [From the Vault: Relics] Exodus that player chooses target playerSet: From the Vault: Relics Type: Artifact Rarity: Mythic Cost: {5} {T}, Sacrifice Memory Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.