Voltaic Construct + Thran Forge + Topiary Lecturer

Voltaic Construct

Thran Forge

Topiary Lecturer

How it works

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

To set this engine into motion, Thran Forge acts as the crucial catalyst by transforming Topiary Lecturer into an artifact creature, which makes it a legal target for Voltaic Construct. Once the Lecturer is successfully an artifact, you can tap it to exploit its green mana production. From there, Voltaic Construct steps in to untap the Lecturer for a mere two mana, leaving you with a net surplus of green mana thanks to the Lecturer's growing power. Repeating this simple loop yields infinite green mana and infinite untaps of your artifact creatures.