Cheapest priced copy (Ravnica: Clue Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Rally to Battle 
Instant · Uncommon · Ravnica Allegiance · #18
Creatures you control get +1/+3 until end of turn. Untap them.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: Clue Edition | 69 | Uncommon | $0.35 | — |
| Ravnica Allegiance | 18 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 25 January 2019Creatures you control that are already untapped get +1/+3, even though they can’t be untapped again.