Cheapest priced copy (From the Vault: Lore): $5.99 at Card Kingdom, foil, near mint, their price list as of .
Memnarch 
Legendary Artifact Creature — Wizard · 4/5 · Rare · Archenemy · #112
{1}{U}{U}: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)
{3}{U}: Gain control of target artifact. (This effect lasts indefinitely.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $5.99 to $54.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Archenemy | 112 | Rare | $7.49Out of stock | — |
| Darksteel | 129 | Rare | $7.49 | $54.99 |
| Secret Lair Drop | 1626 | Rare | $8.49 | $7.49 |
| From the Vault: Lore | 7 | Mythic | — | $5.99 |
2 rulings from Wizards of the Coast
- 1 December 2004You can use the first ability on a nonartifact permanent, wait for the ability to resolve, and then use the second ability on that permanent.
- 1 December 2004The effects of Memnarch’s abilities don’t end at end of turn, and they don’t end when Memnarch leaves the battlefield. Both effects last until the affected permanent leaves the battlefield.