Karn, the Great Creator (JP Alternate Art) [War of the Spark] Mirrodin you may begin the game

you may begin the game with it on the battlefield

Set: Unhinged Type: Instant Rarity: Rare Cost: {B} Choose an artist

whenever a player taps an Island for mana

It has "Sacrifice this creature: Add {C}

Nature's secrets can be read on every tree

Karn, the Great Creator (JP Alternate Art) [War of the Spark] Mirrodin you may begin the gameSet: War of the Spark Type: Legendary Planeswalker Karn 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 converted mana cost. 2: You may choose an artifact card you own from outside the game or in exile, reveal that card, and put it into your hand.