Jegantha, the Wellspring, and Pemmin's Aura

Prerequisites

• Jegantha, the Wellspring on the battlefield
• Pemmin's Aura on the battlefield
• Pemmin's Aura attached to Jegantha
• Jegantha does not have summoning sickness

Steps

1. Activate Jegantha by tapping it, adding
2. Activate Pemmin's Aura's first 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