Scram
Morhorn's expression changed.
It was difficult for Ruin Masters to compete with one another and it often took a long time to prove who was better among them. Ruins weren't pies that could just fall out of the skies and weren't easily used as competition grounds.
As such, Ruin Masters had to find different ways to compete and check the rise in their skills, and this ultimately came down to Matrix Duels.
In a Matrix Duel, both Ruin Masters would bring forward their Matrix in an attempt to swallow the other. Whichever Matrix consumed the other first would win.