Voltaic Construct + Deathbloom Ritualist + Neurok Transmuter

Voltaic Construct

Deathbloom Ritualist

Neurok Transmuter

How it works

1. Cause Deathbloom Ritualist to become an artifact using Neurok Transmuter.
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 three-card loop transforms Deathbloom Ritualist into an artifact creature using Neurok Transmuter's first ability, allowing it to bypass its usual restriction and be targeted by Voltaic Construct. Once Deathbloom Ritualist is in the right state to tap for at least three mana—thanks to a graveyard well-stocked with creature cards—you simply use two of that mana to activate Voltaic Construct, untapping the Ritualist and leaving you with a surplus of infinite colored mana.