Fire Lord Azula, Narset's Reversal, Valley Floodcaller, and Alrund's Epiphany

Prerequisites

• Fire Lord Azula on the battlefield
• Narset's Reversal in hand
• Valley Floodcaller on the battlefield
• Alrund's Epiphany in hand
• each other turn available

Steps

1. Declare Fire Lord Azula as an attacker, triggering its firebending ability, adding
2. Holding priority, cast Alrund's Epiphany by paying its mana cost
3. Fire Lord Azula's second ability triggers, copying Alrund's Epiphany
4. Holding priority, cast Narset's Reversal by paying , targeting the original Alrund's Epiphany 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 Alrund's Epiphany spell, and then return the original Narset's Reversal to your hand
7. Resolve the copy of Narset's Reversal, copying Alrund's Epiphany and returning the original Alrund's Epiphany to your hand
8. Resolve both copies of Alrund's Epiphany 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