Cheapest priced copy (Conflux): $0.35 at Card Kingdom, near mint, their price list as of .
Shard Convergence 
Sorcery · Uncommon · Conflux · #91
Search your library for a Plains card, 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 · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conflux | 91 | Uncommon | $0.35 | $2.99 |
3 rulings from Wizards of the Coast
- 1 February 2009Shard Convergence checks for cards with the subtypes Plains, Island, Swamp, and Mountain, not for cards with those names. You may find nonbasic land cards this way, as long as they have appropriate subtypes.
- 1 February 2009You don’t have to find all four cards.
- 1 February 2009You may find “dual lands” with Shard Convergence. The Plains card you find, for example, can have a second subtype. What subtypes it has won’t impact what other cards you can find. For example, you may find a Hallowed Fountain (which has subtypes Plains and Island) as the Plains card, and another Hallowed Fountain as the Island card.