Rampant Rejuvenator is a rare Creature — Plant Hydra card from Neon Dynasty Commander (NEC), collector number 28. Current market price: $0.95, TCGplayer market prices via Scryfall.
This creature enters with two +1/+1 counters on it. When this creature dies, search your library for up to X basic land cards, where X is this creature's power, put them onto the battlefield, then shuffle.