Cheapest priced copy (Battlebond): $0.35 at Card Kingdom, near mint, their price list as of .
Sickle Dancer 
Creature — Human Warrior · 3/2 · Common · Battlebond · #50
Whenever this creature attacks, if your team controls another Warrior, this creature gets +1/+1 until end of turn.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Battlebond | 50 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 8 June 2018Whether your team controls another Warrior is checked as Sickle Dancer’s triggered ability triggers and again as it resolves. Once it gets +1/+1 this way, it won’t lose it, even if your team loses its other Warriors.