Activate Pyramid of the Pantheon by tapping it, adding .
Activate Mind Over Matter by discarding Damage Control Crew.
Hashaton triggers, causing you to pay 2 to create a tapped token copy of Damage Control Crew that is a 4/4 Zombie.
When the Damage Control Crew token enters the battlefield, it triggers, returning Damage Control Crew from your graveyard to your hand.
Resolve the Mind Over Matter ability, untapping Pyramid of the Pantheon.
Repeat.
This loop is fueled by Pyramid of the Pantheon's ability to tap for three mana once fully charged, providing the exact funds needed to finance Hashaton, Scarab's Fist. Mind Over Matter acts as the engine's core, turning discarded cards into targeted untap triggers that constantly ready Pyramid of the Pantheon for another activation. Damage Control Crew serves as the recurring ammunition for Mind Over Matter, and its entrance trigger cleverly scoops itself right back out of the graveyard to keep the hand perpetually stocked.