Voltaic Construct + Thran Forge + Deathbloom Ritualist

Voltaic Construct

Thran Forge

Deathbloom Ritualist

How it works

1. Cause Deathbloom Ritualist to become an artifact using Thran Forge.
2. Activate Deathbloom Ritualist by tapping it, adding at least 3.
3. Activate Voltaic Construct by paying 2, untapping Deathbloom Ritualist.
4. Repeat from step 2.

This clever setup transforms Deathbloom Ritualist into an artifact creature with the help of Thran Forge, allowing it to be targeted by Voltaic Construct's untap ability. As long as you have at least three creature cards in your graveyard to fuel Deathbloom Ritualist's mana generation, tapping it for mana will yield more than enough resources to repeatedly pay the costs for both Voltaic Construct and Thran Forge's type-changing effect. By looping these activations together, you can continuously untap your newly minted artifact creature to generate an infinite supply of colored mana.