Cheapest priced copy (Forgotten Realms Commander): $0.99 at Card Kingdom, near mint, their price list as of .
Vengeful Ancestor 
Creature — Spirit Dragon · 3/4 · Rare · Tarkir: Dragonstorm Commander · #242
Flying
Whenever this creature enters or attacks, goad target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)
Whenever a goaded creature attacks, it deals 1 damage to its controller.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
5 printings · $0.99 to $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Forgotten Realms Commander | 35 | Rare | $0.99 | — |
| Forgotten Realms Commander | 304 | Rare | $2.29 | — |
| Commander Legends: Battle for Baldur's Gate | 812 | Rare | $0.99 | — |
| Murders at Karlov Manor Commander | 163 | Rare | $1.29 | — |
| Tarkir: Dragonstorm Commander | 242 | Rare | $0.99 | — |