Cheapest priced copy (Modern Horizons): $2.99 at Card Kingdom, near mint, their price list as of .
Ayula, Queen Among Bears 
Legendary Creature — Bear · 2/2 · Rare · Modern Horizons · #155
Whenever another Bear you control enters, choose one —
• Put two +1/+1 counters on target Bear.
• Target Bear you control fights target creature you don't control.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $2.99 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 1 Timeshifts | 19 | Rare | — | $9.99Out of stock |
| Modern Horizons | 155 | Rare | $2.99 | $10.99Out of stock |
| Fallout (Ruzka, Terror of Point Lookout) | 348 | Rare | $4.99 | $5.99 |
| Fallout (Ruzka, Terror of Point Lookout) | 876 | Rare | — | $19.99Out of stock |
2 rulings from Wizards of the Coast
- 14 June 2019For Ayula's second mode, if either target isn't a creature or is otherwise an illegal target as the ability resolves, no creature will deal or be dealt damage.
- 14 June 2019Either of Ayula's modes can target any Bear you control, not just the Bear that entered the battlefield. Ayula can even be the target of its own ability.