Cast Sozin's Comet either from your hand by paying {3}{R}{R} or from exile for its foretell cost by paying {2}{R}.
Declare a creature as an attacker, triggering its firebending ability, adding {R}{R}{R}{R}{R}.
Move to your postcombat main phase. You will not lose the mana due to Ashling.
Activate Aggravated Assault by paying {3}{R}{R}, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
Repeat from step 2.

Infinite combat phases

Infinite red mana

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Sozin's Comet

Aggravated Assault

Ashling, Flame Dancer

Declare a creature as an attacker, triggering Avatar Roku, adding six {R}.
Move to your postcombat main phase. You will not lose the mana due to Ashling.
Activate Aggravated Assault by paying {3}{R}{R}, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
Repeat.

Infinitely powerful red creatures you control until end of turn

Avatar Roku, Firebender

Declare Firebending Student as an attacker, triggering its ability, adding an amount of {R} equal to its power.
Move to your postcombat main phase. You will not lose the mana due to Ashling.
Activate Aggravated Assault by paying {3}{R}{R}, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
Repeat.

Firebending Student

Declare Zuko as an attacker, triggering its ability, adding an amount of {R} equal to the number of experience counters you have.
Move to your postcombat main phase. You will not lose the mana due to Ashling.
Activate Aggravated Assault by paying {3}{R}{R}, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
Repeat.

Zuko, Firebending Master

Declare Sun Warriors as an attacker, triggering its ability, adding an amount of {R} equal to the number of creatures you control.
Move to your postcombat main phase. You will not lose the mana due to Ashling.
Activate Aggravated Assault by paying {3}{R}{R}, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
Repeat.

Infinite ETB

Infinite creature tokens

Sun Warriors

Cast Chain of Plasma by paying {1}{R}, targeting Brash Taunter.
Ashling triggers, causing you to discard a card and draw a card.
Resolve Chain of Plasma, dealing 3 damage to Brash Taunter and choosing to discard a card to copy it.
Brash Taunter triggers, dealing 3 damage to any target.
Repeat from step 2 (getting Ashling's additional results once each).

Near-infinite damage

Infinite draw triggers

Near-infinite self-discard triggers

Near-infinite magecraft triggers

Brash Taunter

Chain of Plasma

Activate Emergence Zone by paying {1}, tapping and sacrificing it, allowing you to cast spells this turn as though they have flash.
Cast an instant or sorcery spell by paying its mana cost, triggering Ashling.
Holding priority, cast Worldfire by paying {6}{R}{R}{R}.
Ashling triggers, causing you to rummage.
Resolve Worldfire, exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to 1.
Resolve the Ashling trigger from step 2, dealling 2 damage to each opponent.
Each opponent loses the game as a state-based action due to having less than 0 life.

Each opponent loses the game

Exile all cards in all hands and graveyards

Exile all permanents

Near-infinite lifeloss for all players

Worldfire

Emergence Zone

Cast Chain of Plasma by paying {1}{R}, targeting Stuffy Doll.
Ashling triggers, causing you to discard a card and draw a card.
Resolve Chain of Plasma, dealing 3 damage to Stuffy Doll and choosing to discard a card to copy it.
Stuffy Doll triggers, dealing 3 damage to the chosen player.
Repeat from step 2 (getting Ashling's additional results once each).

Combos with "Ashling, Flame Dancer"