Dross Scorpion + Myr Moonvessel + Phyrexian Altar + Prototype Portal

Mana needed: {1}

C identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Prototype Portal by paying {1} and tapping it, creating a token copy of Myr Moonvessel.
  2. Activate Phyrexian Altar by sacrificing Myr Moonvessel, adding one mana of any color.
  3. When Myr Moonvessel dies, it and Dross Scorpion trigger.
  4. Resolve the Myr Moonvessel trigger, adding {1}.
  5. Resolve the Dross Scorpion trigger, untapping Prototype Portal.
  6. Repeat.

What the combo produces