Archelos, Lagoon Mystic + Mutable Explorer + Retreat to Coralhelm + Romana II

Mana needed: {3}{G}{G}

GWUB identity

Commander legal

The 4 combo pieces

How to execute it

  1. Cast Mutable Explorer by paying {2}{G}.
  2. When Mutable Explorer enters the battlefield, it triggers, creating an untapped Mutavault land token due to Archelos.
  3. When the Mutavault token enters the battlefield, Retreat to Coralhelm triggers, untapping Romana II.
  4. Activate the Mutavault token by tapping it, adding {C}.
  5. Activate Romana II by paying {1} and tapping it, creating a tapped copy of the Mutavault token.
  6. Repeat from step 3.

What the combo produces