Progenitor Mimic + Skullwinder + Time Stretch

GU identity

Commander legal

The 3 combo pieces

• Progenitor Mimic
• Skullwinder
• Time Stretch

What must be in place

Enough mana available to cast the extra turn spell each turn.
Progenitor Mimic is a copy of Skullwinder.

How to execute it

1. Cast Time Stretch by paying its mana cost, taking an extra turn after this one.
2. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Skullwinder.
3. When the token Skullwinder enters the battlefield, it triggers itself, returning Time Stretch from your graveyard to your hand.
4. Repeat.

What the combo produces

• Infinite turns
• Lock