Ixidron
Creature — Illusion
As this creature enters, turn all other nontoken creatures face down. (They're 2/2 creatures.)
Ixidron's power and toughness are each equal to the number of face-down creatures on the battlefield.*/*
Printings & Conditions (3)
Commander 2014 (C14)(Commander 2014 Edition)#116
Commander 2019 (C19)(Commander 2019)#87Rare
Time Spiral (TSP)(Time Spiral)#65Rare