Voltaic Construct + Transmogrifying Licid + Bighorner Rancher

Voltaic Construct

Transmogrifying Licid

Bighorner Rancher

How it works

1. Activate Bighorner Rancher by tapping it, adding at least 3.
2. Activate Voltaic Construct by paying 2, untapping Bighorner Rancher.
3. Repeat

This clever loop turns Bighorner Rancher into a massive mana engine by taking advantage of its ability to tap for green mana equal to the greatest power among creatures you control. To make this work, Transmogrifying Licid steps in to turn Bighorner Rancher into an artifact—a subtle yet crucial piece that allows it to be targeted by Voltaic Construct's untap ability. By paying just two generic mana to untap the Rancher with Voltaic Construct, you can continually generate more mana than you spend, leaving you with an infinite supply of green mana and endless untaps of your artifact creatures.