And game end. Winner: Seglagg!
He had an explosive turn that took everyone by surprise, and before they could take action to stop him, he rode his momentum. At the time, all Deneb could do was a board clear and Elek could just kill Medrash once. Salrie was too focused on his resurrecting Andy to do anything to counteract it.

How I imagine Seglagg casting/playing Walking Ballista with this absurd amount of mana: https://youtu.be/YqhjUhG7SNQ?t=604