Cheapest priced copy (Antiquities): $699.99 at Card Kingdom, near mint, their price list as of .
Transmute Artifact 
Sorcery · Uncommon · Antiquities · #14
Sacrifice an artifact. If you do, search your library for an artifact card. If that card's mana value is less than or equal to the sacrificed artifact's mana value, put it onto the battlefield. If it's greater, you may pay {X}, where X is the difference. If you do, put it onto the battlefield. If you don't, put it into its owner's graveyard. Then shuffle.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $699.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Antiquities | 14 | Uncommon | $699.99 | — |
6 rulings from Wizards of the Coast
- 4 October 2004Because the "search" requires you to find a card with certain characteristics, you don't have to find the card if you don't want to.
- 4 October 2004If the chosen artifact costs less than or the same as the sacrificed artifact, you simply put it onto the battlefield without paying any additional costs.
- 4 October 2004You can't sacrifice more than one artifact to this spell.
- 4 October 2004The one from the library enters when the spell is resolved, and this does not count as the casting of an artifact.
- 4 October 2004Additional mana spent to cover the differences in mana costs is not part of the mana cost of this spell. It is spent during spell resolution.
- 1 January 2011The sacrifice of an artifact is an effect of the spell, not a cost, which means it happens as the spell resolves. If Transmute Artifact is countered, you do not have to sacrifice an artifact.