Hashaton, Scarab's Fist, Mind Over Matter, Astral Cornucopia, and Golgari Findbroker

Prerequisites

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

Steps

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

Results

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