Castle Locthwain [Throne of Eldraine Prerelease Promos] Phyrexian Horror sacrifice Solitary Confinement unless you

sacrifice Solitary Confinement unless you discard a card

a creature

then chooses and discards 1/3 of his or her hand

Set: Limited Edition Beta Type: Artifact Rare Cost: {1} Creatures with power 3 or greater don't untap during their controllers' untap steps

Castle Locthwain [Throne of Eldraine Prerelease Promos] Phyrexian Horror sacrifice Solitary Confinement unless youSet: Throne of Eldraine Prerelease Promos Type: Land Rarity: Rare Castle Locthwain enters the battlefield tapped unless you control a Swamp. {T}: Add {B}. {1}{B}{B}, {T}: Draw a card, then you lose life equal to the number of cards in your hand. Without Lochthwain's persistence, the realm would stagnate and die.