Sporoloth Ancient is a common Creature — Fungus card from Future Sight (FUT), collector number 152. Current market price: $0.26 (foil $1.02), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, put a spore counter on this creature. Creatures you control have "Remove two spore counters from this creature: Create a 1/1 green Saproling creature token."