Starscourge Radahn is one of the harder Legend Bosses in Elden Ring. He is an optional encounter in Redmane Castle and the fight can only be activated once the Radahn festival kicks off in the RPG.
I'm imagining it as something like the shooting star that crashes into Limgrave after defeating Radhan in Elden Ring, but since I didn't get to experience it firsthand, I'm not sure if the change ...
FromSoftware shocked everyone when they announced last year that Elden Ring would be getting new content for the third year in a row, albeit this time, they were doing something different.