Gilgamesh

A legendary, sentient greatsword created by Alder to serve Leon Zeloth Griever . Has very high shock damage, and can cast lightning bolt at a ridiculously high level for a devastating amount of damage almost at will. Leon has taken it through special training to release its true form, and is an absolute monster when released, though it can only be done for a short period of time. Highly destructive, but has unique rarity, so chances are you will never see this sword.