Cathodion, Dross Scorpion, Prototype Portal, and Thermopod

Prerequisites

• Cathodion in exile
• Dross Scorpion on the battlefield
• Prototype Portal on the battlefield
• Thermopod on the battlefield
• available

Steps

1. Activate Prototype Portal for , creating a token copy of Cathodion
2. Activate Thermopod's second ability by sacrificing Cathodion, adding
3. Cathodion and Dross Scorpion trigger
4. Resolve the Cathodion trigger, adding
5. Resolve the Dross Scorpion, untapping Prototype Portal
6. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers