Unicron

"That which does not become a part of the one, shall become one with the void." Score a GFI early with Mushin, then run a trap out. Let them see a bunch of traps in the trash then mushin out a junebug. If they don't run score a MU and just fast advance out. Achieve mem out mushins. Biotic some stuff. Do 3 brains then mushin a show of force next turn score it and Neural emp. Throw some situational ice around. Excalibur is so versatile. If you know your opponents play style play traps against his style. Immediately when people see you start to mushin they think oh Jank, then devour their world...did you know cerebral Overwriter is Unicron in planet form.