Karn's Temporal Sundering + Panoptic Mirror

U identity

Commander legal

The 2 combo pieces

What must be in place

You control at least one legendary creature and/or planeswalker.

How to execute it

  1. At the beginning of your upkeep, Panoptic Mirror triggers, casting a copy of Karn's Temporal Sundering without paying its mana cost.
  2. Resolve Karn's Temporal Sundering, causing you to take an extra turn after this one.
  3. Repeat each turn.

What the combo produces