Cheapest priced copy (Shadows over Innistrad): $0.99 at Card Kingdom, near mint, their price list as of .
Geralf's Masterpiece 
Creature — Zombie Horror · 7/7 · Mythic · Shadows over Innistrad · #65
Flying
This creature gets -1/-1 for each card in your hand.
{3}{U}, Discard three cards: Return this card from your graveyard to the battlefield tapped.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.99 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shadows over Innistrad Promos | 65s | Mythic | — | $1.49 |
| Shadows over Innistrad | 65 | Mythic | $0.99 | $0.99 |
2 rulings from Wizards of the Coast
- 8 April 2016Geralf's Masterpiece's last ability can only be activated while it's in your graveyard.
- 8 April 2016If a spell or ability causes you to draw cards and then discard cards, Geralf's Masterpiece may have a toughness of 0 while you choose which cards to discard. As long as it has toughness 1 or greater again after the spell or ability resolves, it will survive.