Ekthi, Contaminator Priest is a rare Legendary Creature — Phyrexian Cleric card from Mystery Booster: Commander Edition (MBC), collector number 1.
Other Phyrexians you control get +1/+1. Each Equipment you control has living weapon. (Whenever an Equipment you control enters, create a 0/0 black Phyrexian Germ creature token, then attach that Equipment to it.)