Voltaic Construct + Selvala, Heart of the Wilds + Neurok Transmuter

Voltaic Construct

Selvala, Heart of the Wilds

Neurok Transmuter

How it works

1. Cause Selvala to become an artifact using Neurok Transmuter.
2. Activate Selvala by paying and tapping it, adding at least 3.
3. Activate Voltaic Construct by paying 2, untapping Selvala.
4. Repeat from step 2.

This ingenious loop relies on turning Selvala, Heart of the Wilds into an artifact creature with Neurok Transmuter's first ability, allowing her to be targeted by Voltaic Construct's untap ability. Once Selvala is an artifact, her tap ability generates a surplus of green and colored mana thanks to her own high power relative to the battlefield. You then feed that mana right back into Voltaic Construct to untap Selvala, letting you repeat the process to generate infinite colored mana.