Voltaic Construct + Liquimetal Torque + Harabaz Druid

Voltaic Construct

Liquimetal Torque

Harabaz Druid

How it works

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

By bringing Liquimetal Torque into the equation, we can fundamentally alter Harabaz Druid's nature, turning the Ally-counting mana dork into an artifact so it becomes a legal target for Voltaic Construct. Once that transformation is locked in, tapping Harabaz Druid to generate three or more mana provides more than enough resource to fuel Voltaic Construct's untap ability. Repeating this loop yields infinite colored mana and an arbitrarily large number of untaps for your newly minted artifact creature.