Runadi, Behemoth Caller is a rare Legendary Creature — Cat Shaman card from Jumpstart 2022 (J22), collector number 44. Current market price: $14.85, TCGplayer market prices via Scryfall.
Whenever you cast a creature spell with mana value 5 or greater, that creature enters with X additional +1/+1 counters on it, where X is its mana value minus 4. Creatures you control with three or more +1/+1 counters on them have haste. {T}: Add {G}.