Narset's Reversal + Isochron Scepter
Produces: Infinite turns, Lock


- Color identity
- U
- Mana
- {2} plus enough mana to cast the extra turn spell each turn
Steps
- Cast the extra turn spell by paying its mana cost.
- Holding priority, activate Isochron Scepter by paying {2} and tapping it, casting a copy of Narset's Reversal.
- Resolve the copy of Narset's Reversal, causing you to copy the extra turn spell, and return the original extra turn spell to your hand.
- Resolve the copy of the extra turn spell, causing you to take at least one extra turn after this one.
- Repeat each turn.
How to execute this combo
The "Narset's Reversal + Isochron Scepter" combo takes 5 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite turns, Lock.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.