Color Identity: U

Initial Card State
- Aphetto Alchemist in exile.
- Agatha's Soul Cauldron and Deeproot Pilgrimage on the battlefield.
Easy Prerequisites
- You control a nontoken Merfolk that has a +1/+1 counter on it.
- Aphetto Alchemist exiled by Agatha's Soul Cauldron.
Steps
- Activate the nontoken Merfolk using Aphetto Alchemist's ability by tapping it.
- Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
- Resolve the Merfolk's ability, untapping it.
- Repeat.
Results
- Infinite ETB.
- Infinite creature tokens.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).