Cheapest priced copy (Dark Ascension): $0.35 at Card Kingdom, near mint, their price list as of .
Avacyn's Collar 
Artifact — Equipment · Uncommon · Dark Ascension · #145
Equipped creature gets +1/+0 and has vigilance.
Whenever equipped creature dies, if it was a Human, create a 1/1 white Spirit creature token with flying.
Equip {2}
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dark Ascension | 145 | Uncommon | $0.35 | $0.79 |
One ruling from Wizards of the Coast
- 22 January 2011The triggered ability checks whether the equipped creature as it last existed on the battlefield was a Human. (It doesn’t matter what its creature types are in the graveyard.)