Cheapest priced copy (Rivals of Ixalan): $0.69 at Card Kingdom, near mint, their price list as of .
Admiral's Order 
Instant · Rare · Rivals of Ixalan · #31
Raid — If you attacked this turn, you may pay {U} rather than pay this spell's mana cost.
Counter target spell.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.69 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Rivals of Ixalan Promos | 31p | Rare | $0.79 | $1.99 |
| Rivals of Ixalan Promos | 31s | Rare | — | $1.49 |
| Rivals of Ixalan | 31 | Rare | $0.69 | $2.49 |
2 rulings from Wizards of the Coast
- 8 November 2024Raid abilities care only that you attacked with a creature. It doesn't matter how many creatures you attacked with or which player, planeswalker, or battle those creatures attacked.
- 8 November 2024Raid abilities evaluate the entire turn to see if you attacked with a creature. That creature doesn't have to still be on the battlefield. Similarly, the player, planeswalker, or battle it attacked doesn't have to still be in the game or on the battlefield.