Ancient Den + Goblin Welder + Great Furnace + Retreat to Coralhelm

URW identity

Commander legal

The 4 combo pieces

What must be in place

Goblin Welder does not have summoning sickness.

How to execute it

  1. Activate Goblin Welder by tapping it, causing you to sacrifice Great Furnace and return Ancient Den from your graveyard to the battlefield.
  2. Ancient Den enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
  3. Activate Ancient Den by tapping it, adding {W}.
  4. Activate Goblin Welder by tapping it, causing you to sacrifice Ancient Den and return Great Furnace from your graveyard to the battlefield.
  5. Great Furnace enters the battlefield, triggering Retreat to Coralhelm, untapping Goblin Welder.
  6. Activate Great Furnace by tapping it, adding {R}.
  7. Repeat.

What the combo produces