Card Text:
During your upkeep, put a spore counter on Thallid Devourer.
o0: Remove three spore counters from Thallid Devourer to put a Saproling token into play. Treat this token as a 1/1 green creature.
o0: Sacrifice a Saproling to give Thallid Devourer +1/+2 until end of turn.