Careful Cultivation, Sword of the Paruns, and Agatha of the Vile Cauldron

Prerequisites

• Careful Cultivation on the battlefield
• Sword of the Paruns on the battlefield
• Agatha of the Vile Cauldron on the battlefield
• Umbral Mantle and Careful Cultivation attached to the same creature you control that does not have summoning sickness
• Agatha of the Vile Cauldron has power 2 or greater

Steps

1. Activate the creature with Careful Cultivation and Sword of the Paruns attached by tapping it, adding
2. Activate Sword of the Paruns by paying , untapping the creature
3. Repeat

Results

• Infinite green mana
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce