How it works
Prerequisites
- You control a creature that can tap to produce at least .
Steps
- 1Activate a mana-producing creature by tapping it, adding at least .
- 2Cast Shrieking Drake by paying .
- 3Karametra triggers, causing you to search your library for a Forest or Plains and put it onto the battlefield tapped.
- 4When the Forest or Plains enters the battlefield, Retreat to Coralhelm triggers, untapping the mana-producing creature.
- 5Shrieking Drake enters the battlefield, returning itself from the battlefield to your hand.
- 6Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?