Hashaton, Scarab's Fist, Mind Over Matter, Grave Sifter, and Prismatic Geoscope

Prerequisites

• Hashaton, Scarab's Fist on the battlefield
• Mind Over Matter on the battlefield
• Grave Sifter in hand
• Prismatic Geoscope on the battlefield

Steps

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

Results

• Each opponent returns all creature cards from their graveyard to their hand
• Infinite ETB
• Infinite colored mana
• Infinite self-discard triggers
• Infinite tapped creature tokens