Cheapest priced copy (Magic 2013): $0.39 at Card Kingdom, near mint, their price list as of .
Gem of Becoming 
Artifact · Uncommon · Magic 2013 · #205
{3}, {T}, Sacrifice this artifact: Search your library for an Island card, a Swamp card, and a Mountain card. Reveal those cards, put them into your hand, then shuffle.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.39 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2013 | 205 | Uncommon | $0.39 | $0.99 |
One ruling from Wizards of the Coast
- 1 July 2012You don’t have to find all three cards, even if they’re present in your library. For example, you can activate the ability just to find an Island card and a Swamp card.