Hashaton, Scarab's Fist + Mind Over Matter + Coati Scavenger + The Eternity Elevator

Hashaton, Scarab's Fist

Mind Over Matter

Coati Scavenger

The Eternity Elevator

How it works

1. Activate The Eternity Elevator by tapping it, adding at least twenty .
2. Activate Mind Over Matter by discarding Coati Scavenger.
3. Hashaton triggers, causing you to pay 2 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 The Eternity Elevator.
6. Repeat.

This loop leverages the synergy between Mind Over Matter and Hashaton, Scarab's Fist to turn discarded creature cards into recursive token copies by spending mana to fuel Hashaton's trigger. By discarding Coati Scavenger to the discard-outlet ability of Mind Over Matter, you trigger Hashaton, Scarab's Fist to create a 4/4 Zombie copy that immediately enters the battlefield. This Coati Scavenger token's descend 4 ability triggers to return the original Coati Scavenger right back to your hand, while the untap ability from Mind Over Matter resets The Eternity Elevator so you can continually tap it for the massive amounts of mana needed to sustain the loop.