Jegantha, the Wellspring, and Freed from the Real

Prerequisites

• Jegantha, the Wellspring on the battlefield
• Freed from the Real on the battlefield
• Freed from the Real attached to Jegantha
• Jegantha does not have summoning sickness

Steps

1. Activate Jegantha by tapping it, adding
2. Activate Freed from the Real's second ability by paying , untapping Jegantha
3. Repeat

Results

• Infinite black mana that cannot be spent to pay generic mana costs
• Infinite green mana that cannot be spent to pay generic mana costs
• Infinite red mana that cannot be spent to pay generic mana costs
• Infinite white mana that cannot be spent to pay generic mana costs