Karn's Bastion [War of the Spark Prerelease Promos] Dominaria Prerelease Promos put it on top of

put it on top of its owner's library instead of into that player's graveyard

The high bidder loses life equal to the high bid and gains control of the creature

Set: Mirage Type: Instant Rarity: Rare Cost: {1}{B} Return the top creature card of your graveyard to the battlefield

−3: Gain control of target creature until end of turn

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

Karn's Bastion [War of the Spark Prerelease Promos] Dominaria Prerelease Promos put it on top ofSet: War of the Spark Prerelease Promos Type: Land Rarity: Rare {T}: Add {C}. {4}, {T}: Proliferate. (Choose any number of permanents and or players, then give each another counter of each kind already there.) "I can't protect everyone here. But those I can, I will." Karn