Voltaic Construct + Liquimetal Coating + Incubation Druid

Voltaic Construct

Liquimetal Coating

Incubation Druid

How it works

1. Cause Incubation Druid to become an artifact using Liquimetal Coating.
2. Activate Incubation Druid by tapping it, adding three mana of any type a land you control can produce
3. Activate Voltaic Construct by paying 2, untapping Incubation Druid.
4. Repeat from step 2.

This loop turns a humble mana dork into an unlimited power source by rewriting reality with Liquimetal Coating, making Incubation Druid eligible for Voltaic Construct's mechanical untap ability. Because Incubation Druid taps for three mana when it has a +1/+1 counter, tapping it yields a net positive return after paying the two mana required to activate Voltaic Construct. By repeating this process, you generate infinite mana of any color your lands can produce while infinitely untapping every artifact creature you control.