Hashaton, Scarab's Fist, Mind Over Matter, Astral Cornucopia, and Coati Scavenger

Prerequisites

• Hashaton, Scarab's Fist on the battlefield
• Mind Over Matter on the battlefield
• Astral Cornucopia on the battlefield
• Coati Scavenger in hand

Steps

1. Activate Astral Cornucopia by tapping it, adding at least
2. Activate Mind Over Matter by discarding Coati Scavenger
3. Hashaton triggers, causing you to pay to create a tapped token copy of Coati Scavenger that is a 4/4 Zombie
4. When the Coati Scavenger token enters the battlefield, it triggers, returning Coati Scavenger from your graveyard to your hand
5. Resolve the Mind Over Matter ability, untapping Astral Cornucopia
6. Repeat

Results

• Infinite ETB
• Infinite self-discard triggers
• Infinite tapped creature tokens