Deathspore Thallid is a common Creature — Zombie Fungus card from Time Spiral (TSP), collector number 102. Current market price: $0.22 (foil $4.11), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, put a spore counter on this creature. Remove three spore counters from this creature: Create a 1/1 green Saproling creature token. Sacrifice a Saproling: Target creature gets -1/-1 until end of turn.