Cheapest priced copy (Throne of Eldraine): $0.35 at Card Kingdom, near mint, their price list as of .
Flutterfox 
Creature — Fox · 2/2 · Common · Throne of Eldraine · #12
As long as you control an artifact or enchantment, this creature has flying.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 12 | Common | $0.35 | $0.49 |
| Foundations Jumpstart | 200 | Common | $0.35 | — |
| The List | ELD-12 | Common | $0.35 | — |
2 rulings from Wizards of the Coast
- 4 October 2019Flutterfox gaining flying after it becomes blocked won't remove the blocking creature from combat or cause Flutterfox to become unblocked.
- 4 October 2019You control Auras that you put onto the battlefield attached to a permanent you don't control.