Deeproot Pilgrimage, Kiora's Follower, and Omni-Changeling

Prerequisites

• Deeproot Pilgrimage on the battlefield
• Kiora's Follower on the battlefield
• Omni-Changeling on the battlefield

Steps

1. Activate Kiora's Follower by tapping it, targeting Omni-Changeling
2. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token
3. Resolve the Kiora's Follower ability, untapping Omni-Changeling
4. Activate Omni-Changeling by tapping it, targeting Kiora's Follower
5. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token
6. Resolve the Omni-Changeling ability, untapping Kiora's Follower
7. Repeat

Results

• Infinite ETB
• Infinite creature tokens