Cast Twinflame by paying {1}{R}, targeting Anarchist.
Storm-Kiln Artist triggers twice, creating two Treasure artifact tokens.
Resolve Twinflame, creating a token copy of Anarchist with haste.
When the Anarchist token enters the battlefield, it triggers, returning Twinflame to your hand from your graveyard.
Activate the Treasures by tapping and sacrificing them, adding {1}{R}.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite creature tokens with haste

Infinite creature ETB

Infinite magecraft triggers

Infinite storm count

Twinflame

Storm-Kiln Artist

Harmonic Prodigy

Anarchist

Cast Twinflame by paying {1}{R}, targeting Anarchist.
Storm-Kiln Artist triggers, creating two Treasure artifact tokens.
Resolve Twinflame, creating a token copy of Anarchist with haste.
When the Anarchist token enters the battlefield, it triggers, returning Twinflame to your hand from your graveyard.
Activate the Treasures by tapping and sacrificing them, adding {1}{R}.
Repeat.

Xorn

Cast Twinflame by paying {1}{R}, targeting Anarchist.
Storm-Kiln Artist and Veyran trigger twice.
Resolve both Veyran triggers, giving it +2/+2 until end of turn.
Resolve both Storm-Kiln Artist triggers, creating two Treasure artifact tokens.
Resolve Twinflame, creating a token copy of Anarchist with haste.
When the Anarchist token enters the battlefield, it triggers, returning Twinflame to your hand from your graveyard.
Activate the Treasures by tapping and sacrificing them, adding {1}{R}.
Repeat.

Infinitely large creature until end of turn

Veyran, Voice of Duality

Activate Ashnod's Altar by sacrificing Anarchist, adding {C}{C}.
When Anarchist dies, Mortuary triggers, putting Anarchist on top of your library from your graveyard.
Cast Hit the Mother Lode by paying {4}{R}{R}{R}, exiling Anarchist from the top of your library and casting it without paying its mana cost, and creating five tapped Treasure artifact tokens.
When Anarchist and the Treasures enter the battlefield, Amulet of Vigor triggers five times and Anarchist triggers once.
Resolve all Amulet of Vigor triggers, untapping the Treasures.
Resolve the Anarchist trigger, returning Hit the Mother Lode from your graveyard to your hand.
Activate five Treasures by tapping and sacrificing them, adding {2}{R}{R}{R}.
Repeat.

Combos with "Anarchist"