Vhal, Candlekeep Researcher, Pemmin's Aura, and Energy Refractor

Prerequisites

• Vhal, Candlekeep Researcher on the battlefield
• Pemmin's Aura on the battlefield
• Energy Refractor on the battlefield
• Pemmin's Aura attached to Vhal
• Vhal does not have summoning sickness

Steps

1. Activate Vhal by tapping it, adding at least that cannot be spent to cast spells from your hand
2. Activate Energy Refractor by paying , adding
3. Activate Pemmin's Aura's first ability by paying , untapping Vhal
4. Repeat

Results

• Infinite colored mana
• Infinite colorless mana that cannot be spent to cast spells from your hand