Cheapest priced copy (Khans of Tarkir): $0.35 at Card Kingdom, near mint, their price list as of .
Dragonscale Boon 
Instant · Common · The List · #KTK-131
Put two +1/+1 counters on target creature and untap it.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Khans of Tarkir | 131 | Common | $0.35 | $0.49 |
| The List | KTK-131 | Common | $0.35 | — |
| Ugin's Fate | 131 | Common | $0.49 | — |
One ruling from Wizards of the Coast
- 20 September 2014Dragonscale Boon can target any creature, including one that’s already untapped.