Twinflame + Storm-Kiln Artist + Xorn + Ardent Elementalist

Twinflame

Storm-Kiln Artist

Xorn

Ardent Elementalist

How it works

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