Pioneer Masters

Progenitor Mimic

You may have Progenitor Mimic enter as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

Double Masters

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

RNA Guild Kit

Commander 2016

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield except it gains "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

Dragon's Maze

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield except it gains "At the beginning of your upkeep, if this creature isn't a token, put a token onto the battlefield that's a copy of this creature."