Propagator Primordium is a rare Creature — Fungus card from Alchemy: Ixalan (YLCI), collector number 20.
When Propagator Primordium enters, conjure two cards named Propagator Primordium into your graveyard. At the beginning of your upkeep, put a spore counter on Propagator Primordium. Remove three spore counters from Propagator Primordium: Return target Fungus creature card from your graveyard to the battlefield.