Valley Mightcaller is a rare Creature — Frog Warrior card from Bloomburrow (BLB), collector number 326. Current market price: $2.86 (foil $3.33), TCGplayer market prices via Scryfall.
Trample Whenever another Frog, Rabbit, Raccoon, or Squirrel you control enters, put a +1/+1 counter on this creature.