Voltaic Construct + Transmogrifying Licid + Gumato

Voltaic Construct

Transmogrifying Licid

Gumato

How it works

1. Activate Gumato by tapping it, adding
2. Activate Voltaic Construct by paying 2, untapping Gumato.
3. Repeat

This clever loop relies on Transmogrifying Licid to subtly alter the battlefield, turning Gumato into an artifact creature so it can be targeted by Voltaic Construct. Once Gumato gains the artifact type, its tap ability to produce three green mana more than pays for the Construct's two-mana untap cost, leaving you with a surplus of green mana. By repeating this process, you generate infinite green mana and infinite untaps of your artifact creatures.