Infinite combat damageInfinite combat phasesInfinite copies of nonlegendary creatures you controlInfinite creature tokensInfinite creature ETBInfinite mana creatures you control can produceInfinite untap of creatures you controlInfinite creature LTBInfinite creature sacrifice triggersInfinite death triggers
How it works
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.
This explosive loop transforms a single saddle into an endless parade of destruction, anchored by Calamity, Galloping Inferno and its knack for duplicating nonlegendary mounts. By tapping Port Razer to saddle Calamity, you set the stage for the gallop; when Calamity charges into battle, its triggered ability steps in to create a tapped and attacking copy of Port Razer. As that fresh Port Razer token connects with your opponent, its combat damage trigger untaps your board and grants an additional combat phase, letting you repeat the cycle with a growing army of copies and fresh attackers that bypass attack restrictions.