Plagnox, mitosis master

At the beginning of your end step, an opponent gets a poison counter. Then, create X 0/0 black germ tokens where X is the greatest number of poison counters a player has. If X is 4 or greater, you may search your library for an equipment card and attach it to a germ token. Germ tokens you control get +1/+1. Equipped creatures you control gain infect. Sacrifice a germ: Attach an equipment you own to a creature you control.