Voltaic Construct + Dreamstone Hedron + Bello, Bard of the Brambles

Voltaic Construct

Dreamstone Hedron

Bello, Bard of the Brambles

How it works

1. Activate Dreamstone Hedron by tapping it, adding CCC.
2. Activate Voltaic Construct by paying 2, untapping Dreamstone Hedron.
3. Repeat.

Bello, Bard of the Brambles is the maestro of this transformation, turning Dreamstone Hedron—a heavy-hitting artifact with a mana value of 4—into a living 4/4 Elemental creature with indestructible and haste right during your turn. Once it's a creature, Dreamstone Hedron can be targeted by Voltaic Construct's ability, allowing you to pay two mana to untap the hedron after tapping it for three. This creates a neat self-sustaining mana loop that nets a profit of one colorless mana each cycle, and because Dreamstone Hedron is an artifact creature, you can repeat the process as many times as you like for infinite colorless mana.