Cheapest priced copy (Dragons of Tarkir): $0.35 at Card Kingdom, near mint, their price list as of .
Herald of Dromoka 
Creature — Human Warrior · 2/2 · Common · Dragons of Tarkir · #22
Vigilance
Other Warrior creatures you control have vigilance.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dragons of Tarkir | 22 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 25 February 2015If an attacking creature loses vigilance, it remains untapped and attacking.