Voltaic Construct + Silverskin Armor + Bighorner Rancher

Voltaic Construct

Silverskin Armor

Bighorner Rancher

How it works

1. Cause Bighorner Rancher to become an artifact using Silverskin Armor.
2. Activate Bighorner Rancher by tapping it, adding at least 3.
3. Activate Voltaic Construct by paying 2, untapping Bighorner Rancher.
4. Repeat from step 2.

This clever engine turns Bighorner Rancher into a self-sustaining mana factory by transforming its card type with Silverskin Armor, making it a legal target for Voltaic Construct. Once the Rancher's power is boosted to three or greater, tapping it for green mana generates a surplus that easily covers the Construct's two-mana untap cost. By looping this activation, you can endlessly untap your artifact creatures and harvest infinite green mana to fuel whatever grand transmutation you have planned next.