Color Identity: U

Initial Card State
- Ioreth of the Healing House in exile (exiled by Agatha's Soul Cauldron).
- Agatha's Soul Cauldron and Deeproot Pilgrimage on the battlefield.
Easy Prerequisites
- You control a nontoken Merfolk and at least one additional creature that each have a +1/+1 counter on them.
Steps
- Activate the nontoken Merfolk using Ioreth of the Healing House's ability by tapping it.
- Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
- Resolve the Merfolk's ability, untapping the other creature.
- Activate the other creature using Ioreth of the Healing House's ability by tapping it, untapping the nontoken Merfolk.
- Repeat.
Notes
- If the Merfolk and/or other creature are legendary, you can instead use Ioreth's second ability and untap an additional legendary creature each loop.
Results
- Infinite ETB.
- Infinite creature tokens.
- Infinite mana legendary creatures you control can produce.
- Infinite untap of legendary creatures you control.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).