Cheapest priced copy (The Lost Caverns of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Belligerent Yearling 
Creature — Dinosaur · 3/2 · Uncommon · The Lost Caverns of Ixalan · #133
Trample
Whenever another Dinosaur you control enters, you may have this creature's base power become equal to that creature's power until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 133 | Uncommon | $0.35 | $0.49 |
| The Lost Caverns of Ixalan | 320 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 10 November 2023Effects that modify the power of Belligerent Yearling without setting it to a specific value will apply to the new base power no matter when they started to take effect. The same is true for counters that change its power.
- 10 November 2023Belligerent Yearling's ability overwrites any previous effects that set its power, including previous instances of that ability. Other effects that set its power to specific values that start to apply after the ability resolves, including future instances of the ability, will overwrite that effect.