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: Fifth Edition
Card Type: Artifact Creature
Creature Type: Horse
Casting Cost: 4
Card Text: Clockwork Steed cannot be blocked by artifact creatures.
When Clockwork Steed comes into play, put four +1/+0 counters on it. At the end of any combat in which Clockwork Steed attacked or blocked, remove one of these counters.
oX, ocT: Put X +1/+0 counters on Clockwork Steed. You may have no more than four of these counters on Clockwork Steed. Use this ability only during your upkeep.
Oracle Text: Clockwork Steed enters the battlefield with four +1/+0 counters on it.
Clockwork Steed can't be blocked by artifact creatures.
At end of combat, if Clockwork Steed attacked or blocked this combat, remove a +1/+0 counter from it.
X, Tap: Put up to X +1/+0 counters on Clockwork Steed. This ability can't cause the total number of +1/+0 counters on Clockwork Steed to be greater than four. Activate this ability only during your upkeep.
Artist: Terese Nielsen