Cheapest priced copy (The List): $64.99 at Card Kingdom, foil, near mint, their price list as of .
Amulet of Vigor 
Artifact · Rare · Worldwake · #121
Whenever a permanent you control enters tapped, untap it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $64.99 to $279.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan Commander | 103 | Rare | $84.99 | $279.99 |
| The List | WWK-121 | Rare | — | $64.99 |
| Secret Lair Drop | 167 | Rare | — | $64.99 |
| Worldwake | 121 | Rare | $69.99 | $109.99 |
2 rulings from Wizards of the Coast
- 1 March 2010For Amulet of Vigor's ability to trigger, a permanent must enter tapped due to an effect that says "put [the permanent] onto the battlefield tapped," "[this permanent] enters tapped," or the like. If it enters untapped, the ability won't trigger, even if you tap that permanent afterward.
- 1 March 2010If you control more than one Amulet of Vigor, each Amulet's ability triggers when a permanent enters tapped and under your control. The first ability that resolves will untap that permanent. If the permanent somehow becomes tapped again before the next ability resolves, the next ability will untap it as well (and so on).