Prototype Portal, Dross Scorpion, Blasting Station, and Cathodion

Prerequisites

• Prototype Portal on the battlefield
• Dross Scorpion on the battlefield
• Blasting Station on the battlefield
• Cathodion on the battlefield
• undefined available

Steps

1. Activate Prototype Portal by paying and tapping it, creating a token copy of Cathodion
2. When Cathodion enters, Blasting Station triggers, untapping itself
3. Activate Blasting Station by sacrificing Cathodion and tapping it
4. When Cathodion dies, Cathodion and Dross Scorpion trigger
5. Resolve the Cathodion trigger, adding
6. Resolve the Dross Scorpion trigger, untapping Prototype Portal
7. Resolve the Blasting Station ability, dealing 1 damage to any target
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage