Murasa Rootgrazer + Retreat to Coralhelm + Yarok, the Desecrated

GWUB identity

Commander legal

The 3 combo pieces

What must be in place

At least one basic land in hand.
Murasa does not have summoning sickness.

How to execute it

  1. Tap Rootgrazer, putting a basic land into play.
  2. Retreat to Coralhelm triggers twice, in response, tap the basic for mana.
  3. Let the first Retreat trigger resolve, untapping Rootgrazer.
  4. Tap Rootgrazer, returning any basic you control to your hand.
  5. Let the second Retreat trigger resolve, untapping Rootgrazer.
  6. Repeat

What the combo produces