Cheapest priced copy (Tarkir: Dragonstorm Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Anafenza, Unyielding Lineage 
Legendary Creature — Spirit Soldier · 2/2 · Rare · Tarkir: Dragonstorm · #2
Flash
First strike
Whenever another nontoken creature you control dies, Anafenza endures 2. (Put two +1/+1 counters on it or create a 2/2 white Spirit creature token.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
4 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tarkir: Dragonstorm Promos | 2p | Rare | $0.49 | $0.49 |
| Tarkir: Dragonstorm Promos | 2s | Rare | — | $0.99 |
| Tarkir: Dragonstorm | 2 | Rare | $0.49 | $0.49 |
| Tarkir: Dragonstorm | 327 | Rare | $0.49 | $0.79 |
4 rulings from Wizards of the Coast
- 4 April 2025If Anafenza dies at the same time as one or more other nontoken creatures you control, Anafenza’s last ability triggers for each of those other nontoken creatures.
- 4 April 2025If a noncreature permanent is instructed to endure, the effect is the same. You can put +1/+1 counters on that permanent or create a Spirit token.
- 4 April 2025You choose whether to put +1/+1 counters on the creature or create a Spirit token as the ability that includes the endure instruction is resolving. No player may take actions between the time you choose and the time that counters are added or tokens are created.
- 4 April 2025If you can’t put +1/+1 counters on the creature for any reason as an endure ability resolves (for example, if the creature is no longer on the battlefield), you’ll just create a Spirit token.