Cheapest priced copy (Shards of Alara): $2.29 at Card Kingdom, near mint, their price list as of .
Sigil of Distinction 
Artifact — Equipment · Rare · Shards of Alara · #219
This Equipment enters with X charge counters on it.
Equipped creature gets +1/+1 for each charge counter on this Equipment.
Equip—Remove a charge counter from this Equipment.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $2.29 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shards of Alara | 219 | Rare | $2.29 | $4.49 |
2 rulings from Wizards of the Coast
- 1 October 2008Removing a charge counter from Sigil of Distinction is the only way to pay for its equip ability. If it has no charge counters on it, its equip ability can't be activated.
- 1 October 2008If Sigil of Distinction is attached to a creature when its equip ability is activated targeting a different creature, the first creature will immediately get a little smaller because a charge counter has been removed from Sigil of Distinction as a cost. Then, when the equip ability resolves, Sigil of Distinction will move to the new creature and the first creature will lose the entire bonus the Equipment was giving it.