Fire Lord Azula + Narset's Reversal + Beacon of Tomorrows + Valley Floodcaller

Fire Lord Azula

Narset's Reversal

Beacon of Tomorrows

Valley Floodcaller

How it works

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

This explosive loop centers on Fire Lord Azula, whose attacking firebending provides the red mana you need while her triggered ability duplicates your spells. By casting Beacon of Tomorrows, you generate a copied extra turn and a fresh copy in hand, while Valley Floodcaller provides the flash capability to orchestrate this entire stack at instant speed. The true engine hums when you drop Narset's Reversal into the mix: copying and bouncing your own spells allows you to infinitely recur both your extra turns and the Reversal itself, chaining endless loops straight to victory.