Fire Lord Azula, Narset's Reversal, Vedalken Orrery, and Part the Waterveil

Prerequisites

• Fire Lord Azula on the battlefield
• Narset's Reversal in hand
• Vedalken Orrery on the battlefield
• Part the Waterveil in hand
• each other turn available

Steps

1. Declare Fire Lord Azula as an attacker, triggering its firebending ability, adding
2. Holding priority, cast Part the Waterveil by paying its mana cost
3. Fire Lord Azula's second ability triggers, copying Part the Waterveil
4. Holding priority, cast Narset's Reversal by paying , targeting the original Part the Waterveil spell
5. Fire Lord Azula's second ability triggers, copying Narset's Reversal, targeting the original Narset's Reversal
6. Resolve the copy of Narset's Reversal, causing you to copy Narset's Reversal targeting the original Part the Waterveil spell, and then return the original Narset's Reversal to your hand
7. Resolve the copy of Narset's Reversal, copying Part the Waterveil and returning the original Part the Waterveil to your hand
8. Resolve both copies of Part the Waterveil from steps 3 and 7, causing you to take two extra turns after this one
9. Repeat during your second extra turn

Results

• Infinite turns