Cheapest priced copy (Jumpstart): $4.49 at Card Kingdom, near mint, their price list as of .
Duelist's Heritage 
Enchantment · Rare · Commander 2016 · #1
Whenever one or more creatures attack, you may have target attacking creature gain double strike until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
8 printings · $4.49 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2016 | 1 | Rare | $5.99 | — |
| Commander 2021 | 90 | Rare | $4.99 | — |
| Commander Anthology Volume II | 26 | Rare | $5.49 | — |
| Jumpstart | 101 | Rare | $4.49 | — |
| Murders at Karlov Manor Commander | 60 | Rare | $5.49 | — |
| New Capenna Commander | 197 | Rare | $4.99 | — |
| Avatar: The Last Airbender Eternal | 153 | Rare | $5.49 | $6.99 |
| Star Trek Commander | 422 | Rare | $4.99 | $5.99 |
One ruling from Wizards of the Coast
- 8 November 2016The ability of Duelist's Heritage triggers whenever any player attacks with one or more creatures, not just when you do. You know which players and planeswalkers the creatures are attacking before you choose the target creature.