Toph, the First Metalbender + Candelabra of Tawnos + Nyx Lotus
Toph, the First Metalbender
Candelabra of Tawnos
Nyx Lotus
Infinite mana lands you control can produceInfinite mana among colors with which you have devotionInfinite untap of nontoken artifacts you controlInfinite mana nontoken artifacts you control can produceInfinite untap of lands you control
How it works
Activate Nyx Lotus by tapping it, adding at least three mana of any color you have devotion to.
Activate Candelabra of Tawnos by paying 2 and tapping it, untapping Nyx Lotus and Candelabra of Tawnos as they are lands due to Toph.
Repeat.
This ingenious loop centers around the clever synergy provided by Toph, the First Metalbender, whose passive ability turns your nontoken artifacts into lands. Because of this transformation, Candelabra of Tawnos and Nyx Lotus are no longer just artifacts—they are lands that can target and untap one another. By sinking mana into Candelabra of Tawnos to untap your newly landified board, you can repeatedly tap Nyx Lotus for a massive surge of devotion-fueled mana, generating an infinite loop of colored and colorless energy.