Progenitor Mimic
Progenitor Mimic {4}{G}{U}
Creature - Shapeshifter
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."
Latest set: [DGM] Dragon's Maze ( M · #92 )