Roy acted as a equal yet opposite force to arranis power. The push for his pull. While arranis was causing the ground to crystallize Roy was creating cracks in it as he pulled the raw power of both creation, destruction and time through him and into the blade. The blade grew and grew in size before folded both space and time causing most of it to be moved to the fourth dimension leaving behind a small remainder that was identical to the original blade. The 4d space acted as both a storage and a conduit for the energy being fed to it.