Sporesower Thallid is a uncommon Creature — Fungus card from Time Spiral (TSP), collector number 220. Current market price: $0.31 (foil $0.80), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, put a spore counter on each Fungus you control. Remove three spore counters from this creature: Create a 1/1 green Saproling creature token.