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

Prerequisites

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

Steps

1. Activate Astral Cornucopia by tapping it, adding at least
2. Activate Mind Over Matter by discarding Gravedigger
3. Hashaton triggers, causing you to pay to create a tapped token copy of Gravedigger that is a 4/4 Zombie
4. When the Gravedigger token enters the battlefield, it triggers, returning Gravedigger 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