Kydele, Chosen of Kruphix, and Umbral Mantle

Prerequisites

• Kydele, Chosen of Kruphix on the battlefield
• Umbral Mantle on the battlefield
• You have drawn at least four cards this turn
• Umbral Mantle attached to Kydele
• Kydele does not have summoning sickness

Steps

1. Activate Kydele by tapping it, adding at least
2. Activate Umbral Mantle by paying , untapping Kydele
3. Repeat

Results

• Infinite colorless mana