Voltaic Construct + Kydele, Chosen of Kruphix + Liquimetal Coating

Voltaic Construct

Kydele, Chosen of Kruphix

Liquimetal Coating

How it works

1. Cause Kydele to become an artifact using Liquimetal Coating.
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 clever engine transforms Kydele, Chosen of Kruphix into a tireless mana engine by leaning on Liquimetal Coating to turn her into an artifact creature. Once she has that artifact typing, Voltaic Construct can step in to untap her for the low cost of two mana. As long as you have drawn enough cards this turn for Kydele's tap ability to generate more than the two colorless mana required to fuel Voltaic Construct, you can repeat the loop to generate infinite colorless mana.