Voltaic Construct + Pyramid of the Pantheon + The Blackstaff of Waterdeep

Voltaic Construct

Pyramid of the Pantheon

The Blackstaff of Waterdeep

How it works

1. Animate Pyramid of the Pantheon using The Blackstaff of Waterdeep.
2. Activate Pyramid of the Pantheon by tapping it, adding three mana of any color
3. Activate Voltaic Construct by paying 2, untapping Pyramid of the Pantheon.
4. Repeat from step 2.

This clever loop transforms a humble monument into a powerhouse by turning Pyramid of the Pantheon into an artifact creature via The Blackstaff of Waterdeep's animation ability. Once it's a creature, you can tap the Pyramid for its maximum three-mana output, leaving it primed for Voltaic Construct to untap it for a mere two mana. By funneling that generated mana back into the Construct, you net positive mana with every single iteration.