Voltaic Construct + Cyberdrive Awakener + Sceptre of Eternal Glory

Voltaic Construct

Cyberdrive Awakener

Sceptre of Eternal Glory

How it works

1. Animate Sceptre of Eternal Glory using Cyberdrive Awakener.
2. Activate Sceptre of Eternal Glory by tapping it, adding three mana of any color
3. Activate Voltaic Construct by paying 2, untapping Sceptre of Eternal Glory.
4. Repeat from step 2.

This loop transforms a humble mana rock into an infinite powerhouse by exploiting the temporary animation granted by Cyberdrive Awakener. Once the Awakener turns Sceptre of Eternal Glory into a 4/4 artifact creature, it becomes a valid target for Voltaic Construct's untap ability. Because the Sceptre's upgraded state allows it to tap for three mana while the Construct only demands two to untap it, you generate a net surplus of mana with every iteration.