Prototype Portal, Dross Scorpion, Sarcatog, and Su-Chi Cave Guard

Prerequisites

• Prototype Portal on the battlefield
• Dross Scorpion on the battlefield
• Sarcatog on the battlefield
• Su-Chi Cave Guard on the battlefield
• undefined available

Steps

1. Activate Prototype Portal by paying and tapping it, creating a token copy of Su-Chi Cave Guard
2. Activate Sarcatog by sacrificing Su-Chi Cave Guard
3. When Su-Chi Cave Guard dies, Su-Chi Cave Guard and Dross Scorpion trigger
4. Resolve the Su-Chi Cave Guard trigger, adding eight
5. Resolve the Dross Scorpion trigger, untapping Prototype Portal
6. Resolve the Sarcatog ability, giving it +1/+1 until end of turn
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinitely large Sarcatog until end of turn