Malcolm, Keen-Eyed Navigator + Furnace Celebration + Opalescence + Xorn + Arcane Adaptation

Malcolm, Keen-Eyed Navigator

Furnace Celebration

Opalescence

Xorn

Arcane Adaptation

How it works

1. Activate a Treasure by tapping and sacrificing it, adding 1.
2. Furnace Celebration triggers, causing you to pay 2 to deal two damage to an opponent.
3. Malcolm triggers, creating two Treasure tokens.
4. Activate the Treasures by tapping and sacrificing them, adding 2.
5. Furnace Celebration triggers twice.
6. Resolve the first trigger, choosing not to pay.
7. Resolve the second trigger, causing you to pay 2 to deal two damage to an opponent.
8. Repeat from step 3.