Cheapest priced copy (Fate Reforged): $0.79 at Card Kingdom, near mint, their price list as of .
Supplant Form 
Instant · Rare · Fate Reforged · #54
Return target creature to its owner's hand. You create a token that's a copy of that creature.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.79 to $8.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fate Reforged | 54 | Rare | $0.79 | $1.99 |
| Fate Reforged Promos | 54 | Rare | — | $8.49 |
| Fate Reforged Promos | 54s | Rare | — | $5.49 |
6 rulings from Wizards of the Coast
- 24 November 2014If you return a face-down creature to its owner’s hand, the token will be a face-up colorless 2/2 creature with no name, no abilities, and no creature types. (The face-down creature card will be revealed to all players as it leaves the battlefield.)
- 24 November 2014If the copied creature had {X} in its mana cost, X is 0.
- 24 November 2014If the copied creature is a token, the token created by Supplant Form copies the original characteristics of that token as stated by the effect that put it onto the battlefield.
- 24 November 2014If the copied creature was copying something else, the token enters the battlefield as whatever that creature was copying.
- 24 November 2014The token copies exactly what was printed on the creature and nothing else (unless that creature was copying something else or was a token; see below). It doesn’t copy whether that creature was tapped or untapped, whether it had any counters on it or Auras and/or Equipment attached to it, or any non-copy effects that changed its power, toughness, types, color, and so on.
- 24 November 2014Any enters-the-battlefield abilities of the copied creature will trigger when the token enters the battlefield. Any “As [this creature] enters the battlefield” or “[This creature] enters the battlefield with” abilities of the copied creature will also work.