Prerequisites
- Isochron Scepter on the battlefield
- Narset's Reversal in exile
- Temporal Mastery in hand
- each turn available
Steps
- Cast Temporal Mastery
- Hold priority and activate Isochron Scepter
- Cast the copy of Narset's Reversal, targeting Temporal Mastery
- Resolve the copy of Narset's Reversal
- Resolve the copy of Temporal Mastery
- With Temporal Mastery in hand, pass the turn to yourself
- Repeat