Karn, the Great Creator (Japanese Alternate Art) [War of the Spark Promos] SM103a then return that card to

then return that card to the battlefield under its owner's control

your pot will explode

with which you can assemble one Nexus Syphon

you may cast permanent spells from among them

800 species that live in Asia

Karn, the Great Creator (Japanese Alternate Art) [War of the Spark Promos] SM103a then return that card toSet: War of the Spark Promos 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.