How it works
Prerequisites
- At least one basic land in hand.
- Murasa does not have summoning sickness.
Steps
- 1Tap Rootgrazer, putting a basic land into play.
- 2Retreat to Coralhelm triggers twice, in response, tap the basic for mana.
- 3Let the first Retreat trigger resolve, untapping Rootgrazer.
- 4Tap Rootgrazer, returning any basic you control to your hand.
- 5Let the second Retreat trigger resolve, untapping Rootgrazer.
- 6Repeat
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?