Prototype Portal, Dross Scorpion, Phyrexian Altar, and Myr Moonvessel

Prerequisites

• Prototype Portal on the battlefield
• Dross Scorpion on the battlefield
• Phyrexian Altar on the battlefield
• Myr Moonvessel in exile
• available

Steps

1. Activate Prototype Portal for , creating a token copy of Myr Moonvessel
2. Activate Phyrexian Altar by sacrificing Myr Moonvessel, adding one many of any color
3. Myr Moonvessel and Dross Scorpion trigger
4. Resolve the Myr Moonvessel 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