Quirion Beastcaller is a rare Creature — Dryad Warrior card from Dominaria United Promos (PDMU), collector number 175p. Current market price: $0.49 (foil $0.63), TCGplayer market prices via Scryfall.
Whenever you cast a creature spell, put a +1/+1 counter on this creature. When this creature dies, distribute X +1/+1 counters among any number of target creatures you control, where X is the number of +1/+1 counters on this creature.