Voltaic Construct + Biotransference + Incubation Druid

Voltaic Construct

Biotransference

Incubation Druid

How it works

1. Activate Incubation Druid by tapping it, adding three mana of any type a land you control can produce
2. Activate Voltaic Construct by paying 2, untapping Incubation Druid.
3. Repeat

This clever loop turns an ordinary mana dork into an engine for infinite mana by blurring the lines between creature types. Thanks to Biotransference making creatures into artifacts across all zones, Incubation Druid naturally qualifies as an artifact creature that can be untappable. That means Voltaic Construct's ability can target the Druid, allowing you to untap it for just two mana after tapping it for three. By cycling this activation, you generate infinite mana of any type your lands can produce while infinitely untapping any other artifact creatures you happen to control along the way.