This ingenious loop relies on turning Soldevi Excavations into a self-sustaining mana engine, fueled gracefully by the blue mana it produces alongside colorless. By enchanting Vizier of Tumbling Sands with Pemmin's Aura, you create a dedicated untapper that pays for its own reset: tapping the Vizier untaps the land, while spending the blue mana generated by Soldevi Excavations into the Aura's untap ability readies the Vizier once more. Because Soldevi Excavations taps for both types of mana, this closed circuit generates an infinite surplus of colorless mana to sink into whatever victory you desire.