Calamity, Galloping Inferno + Port Razer
Produces: Infinite combat damage, Infinite combat phases, Infinite copies of nonlegendary creatures you control, Infinite creature tokens, Infinite ETB, Infinite mana creatures you control can produce, Infinite untap of creatures you control, Infinite LTB, Infinite sacrifice triggers, Infinite death triggers


- Color identity
- R
Prerequisites
An opponent cannot block creatures you control.
Steps
- Activate Calamity's saddle ability by tapping Port Razer, causing Calamity to become saddled until end of turn.
- Declare Calamity as an attacker.
- Calamity triggers, creating a tapped and attacking copy of Port Razer, and repeating the process once for any nonlegendary creature that saddled Calamity this turn.
- Deal combat damage using the Port Razer token(s).
- Each Port Razer who has not attacked the opponent this turn triggers, causing you to untap each creature you control and to get that many additional combat phases after this one.
- Repeat from step 2 each combat phase.
How to execute this combo
The "Calamity, Galloping Inferno + Port Razer" combo takes 6 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite combat damage, Infinite combat phases, Infinite copies of nonlegendary creatures you control, Infinite creature tokens, Infinite ETB, Infinite mana creatures you control can produce, Infinite untap of creatures you control, Infinite LTB, Infinite sacrifice triggers, Infinite death triggers.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.