Voltaic Construct + Thran Forge + Rainveil Rejuvenator

Voltaic Construct

Thran Forge

Rainveil Rejuvenator

How it works

1. Cause Rainveil Rejuvenator to become an artifact using Thran Forge.
2. Activate Rainveil Rejuvenator by tapping it, adding at least .
3. Activate Voltaic Construct by paying 2, untapping Rainveil Rejuvenator.
4. Repeat from step 2.

This clever loop transforms Rainveil Rejuvenator into an artifact creature with the help of Thran Forge, making it a valid target for Voltaic Construct. Once the Rejuvenator is successfully reclassified as an artifact, its tap ability produces a surplus of green mana that easily covers the activation costs of both the Construct and the Forge. By cycling this activation and untapping loop over and over, you generate infinite green mana while keeping Voltaic Construct and your newly minted artifact creature ready for whatever follows.