Voltaic Construct + Liquimetal Torque + Circle of Dreams Druid

Voltaic Construct

Liquimetal Torque

Circle of Dreams Druid

How it works

1. Cause Circle of Dreams Druid to become an artifact using Liquimetal Torque.
2. Activate Circle of Dreams Druid by tapping it, adding at least .
3. Activate Voltaic Construct by paying 2, untapping Circle of Dreams Druid.
4. Repeat from step 2.

By utilizing Liquimetal Torque, you can turn your Circle of Dreams Druid into an artifact, cleverly bypassing the usual restriction that prevents it from being targeted by Voltaic Construct's untap ability. Once the Druid is an artifact creature, tapping it to add massive amounts of green mana via Circle of Dreams Druid's own ability provides all the fuel you need. You simply use a portion of that mana to pay for Voltaic Construct's untap cost, freeing the Druid to be tapped over and over again for an infinite mana loop.