Karn, the Great Creator (Retro) [Secret Lair Drop Series] Teferi (They can't be blocked as

(They can't be blocked as long as defending player controls a Forest

you may pay {R}{R}{R}

Each of those players may choose new targets for their copy

draw X cards

exile the top card of that player's library face down

Karn, the Great Creator (Retro) [Secret Lair Drop Series] Teferi (They can't be blocked asSet: Secret Lair Drop Series Type: Legendary Planeswalker Karn Rarity: Rare Cost: {4} Activated abilities of artifacts your opponents control can't be activated. +1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value. 2: You may reveal an artifact card you own from outside the game or choose a face up artifact card you own in exile. Put that card into your hand.