Sivriss, Nightmare Speaker is a uncommon Legendary Creature — Snake Cleric Warlock card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 148. Current market price: $0.11 (foil $0.25), TCGplayer market prices via Scryfall.
{T}, Sacrifice another creature or an artifact: For each opponent, you mill a card, then return that card from your graveyard to your hand unless that player pays 3 life. (To mill a card, put the top card of your library into your graveyard.) Choose a Background (You can have a Background as a second commander.)
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