Caged Sun + Great Furnace + Retreat to Coralhelm + Tawnos, Solemn Survivor

Mana needed: {1}{W}{U}{B}

WUBR identity

Commander legal

The 4 combo pieces

What must be in place

Tawnos does not have summoning sickness.
"Red" chosen with Caged Sun.
You control at least two artifact tokens.

How to execute it

  1. Activate Tawnos' second ability by paying {1}{W}{U}{B}, tapping it, sacrificing two artifact tokens and exiling Great Furnace from your graveyard, causing you to create a token of Great Furnace.
  2. When the Great Furnace token enters the battlefield, Retreat to Coralhelm triggers, untapping Tawnos.
  3. Activate the Great Furnace token by tapping it, adding {R}.
  4. Caged Sun triggers, adding {R}.
  5. Activate Tawnos' first ability by paying {2} and tapping it, creating a copy of the Great Furnace token and causing you to mill two cards.
  6. Repeat from step 2.

What the combo produces