White-backed artist proofs are printed by Wizards of the Coast and are only issued to the artist. Only 50 of each card are produced. Many of my popular cards have been completely sold out long ago. The front of the cards are printed as normal but the backs are unprinted/only white. They are unique collectible items and highly sought after by some.
Each card comes signed by the artist. The prices are dictated by popularity, rarity, and inventory--as stock reduces, prices go up on remaining cards.
Set: Ravnica: City of Guilds
Creature Type: Human Soldier
Casting Cost: 4
Card Text: Convoke (Each creature you tap while playing this spell reduces its cost by 1 or by one mana of that creature’s color.)
Oracle Text: Convoke (Each creature you tap while casting this spell reduces its cost by 1 or by one mana of that creature's color.)
Flavor Text: Equenauts are the seeds of the Conclave, scattered on the four winds, searching for new places to take root.
Artist: Terese Nielsen