Surgical Extraction (Buy-A-Box) [New Phyrexia Promos] Rivals of Ixalan Prerelease Promos sacrifice Koskun Falls unless you

sacrifice Koskun Falls unless you tap an untapped creature you control

When Thirst enters the battlefield

protection from white

the three brothers raised an army of 500 youths to fight the Yellow Scarves rebellion

That creature can't be regenerated

Surgical Extraction (Buy-A-Box) [New Phyrexia Promos] Rivals of Ixalan Prerelease Promos sacrifice Koskun Falls unless youSet: New Phyrexia Promos Type: Instant Rarity: Rare Cost: {B P} ({B P} can be paid with either {B} or 2 life.) Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles.