How can you create a combo with Prototype Portal, Dross Scorpion, Thermopod, Cathodion?
user
[START OF COMBO]This combo can be formed with Prototype Portal, Dross Scorpion, Thermopod, Cathodion

Color identity: R
Mana cost: {3}
Steps:
  1. Activate Prototype Portal for {3}, creating a token copy of Cathodion.
  2. Activate Thermopod's second ability by sacrificing Cathodion, adding {R}.
  3. Cathodion and Dross Scorpion trigger.
  4. Resolve the Cathodion trigger, adding {C}{C}{C}.
  5. Resolve the Dross Scorpion, untapping Prototype Portal.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Prototype Portal must be on the battlefield
  - Dross Scorpion must be on the battlefield
  - Thermopod must be on the battlefield
  - Cathodion must be exiled
[END OF COMBO PREREQUISITES]
assistant