Cheapest priced copy (Foundations Jumpstart): $0.39 at Card Kingdom, near mint, their price list as of .
Audacity 
Enchantment — Aura · Uncommon · The Brothers' War · #169
Enchant creature
Enchanted creature gets +2/+0 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
When this Aura is put into a graveyard from the battlefield, draw a card.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.39 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War | 169 | Uncommon | $0.49 | $0.79 |
| Foundations Jumpstart | 631 | Uncommon | $0.39 | — |
One ruling from Wizards of the Coast
- 14 October 2022If the creature Audacity would enchant is an illegal target by the time the Aura spell resolves, the entire spell doesn't resolve. It's put into your graveyard from the stack, not the battlefield, so its last ability won't trigger.