Tainted Observer{1}{G}{U}

Creature — Phyrexian Bird

Flying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever another creature enters the battlefield under your control, you may pay {2}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

2/3

Illustrated by Johann Bodin