Sin, Unending Cataclysm + Thornbite Staff + Blasting Station + Heronblade Elite

Sin, Unending Cataclysm

Thornbite Staff

Blasting Station

Heronblade Elite

How it works

1. Cast Sin either from your hand or command zone by paying 5 plus commander tax if applicable.
2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters on Sin.
3. When Sin enters, Blasting Station triggers, untapping Blasting Station.
4. Activate Blasting Station by tapping it and sacrificing Sin.
5. Choose to return Sin to the command zone from your graveyard.
6. When Sin dies, it and Heronblade Elite trigger.
7. Resolve the Sin trigger, putting its counters on Heronblade Elite.
8. Resolve the Heronblade Elite trigger, untapping it.
9. Resolve the Blasting Station ability.
10. Activate Heronblade Elite by tapping it, adding an amount of or equal to its power.
11. Repeat.

This loop leverages Sin, Unending Cataclysm's massive entry bonus to turn Heronblade Elite into a monstrous mana producer, all while Blasting Station provides the sacrificial outlet to close out the game. Whenever Sin enters, it strips counters from your permanents to grow huge, and you immediately sacrifice it to Blasting Station so you can send your commander back to the command zone and trigger Heronblade Elite. As Heronblade Elite grows with the transferred counters from Sin's death, tapping it yields absurd amounts of green or blue mana to recast your commander over and over. Meanwhile, Thornbite Staff can sit equipped or ready to assist as needed, ensuring your engine keeps firing off infinite damage, sacrifices, and death triggers until the table is cleared.