Voltaic Construct + Kydele, Chosen of Kruphix + Thran Forge

Voltaic Construct

Kydele, Chosen of Kruphix

Thran Forge

How it works

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

This brilliant loop transforms Kydele, Chosen of Kruphix into an artifact creature with the help of Thran Forge, allowing her to benefit directly from Voltaic Construct's untap ability. As long as you have drawn at least three cards this turn, tapping Kydele generates more than enough mana to pay for the construct's activation and still come out ahead. By continuously untapping her with Voltaic Construct, you can repeat the process to generate an infinite supply of colorless mana.