Voltaic Construct + Grim Monolith + Cyberdrive Awakener

Voltaic Construct

Grim Monolith

Cyberdrive Awakener

How it works

1. Animate Grim Monolith using Cyberdrive Awakener.
2. Activate Grim Monolith by tapping it, adding CCC.
3. Activate Voltaic Construct by paying 2, untapping Grim Monolith.
4. Repeat from step 2.

This clever loop transforms a humble mana rock into a powerhouse by leaning on Cyberdrive Awakener, whose enters-the-battlefield trigger animates your noncreature artifacts into 4/4 artifact creatures for the turn. Once Grim Monolith is a creature, Voltaic Construct can target it with its ability to untap it for just two mana. Because tapping Grim Monolith yields three colorless mana while the untap costs only two, you generate a net positive loop of infinite colorless mana.