From last season we all know Marteen played only Raze and Yoru because N4rrate played Jett, I see it as a big problem for Marteen try to adapt to new duelists while being too good with Yoru, but he has all pre season so it should be fine
marteen wasn't bad last season and apparently he is a scrim demon. Even n4rrate said how Marteen could become best duelist in the world if he played like in scrims (after joining SEN)