Hashaton, Scarab's Fist, Mind Over Matter, Astral Cornucopia, and Greenwarden of Murasa

Prerequisites

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

Steps

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