The Garden of Eden story recounts how God created Adam and Eve, commanded them not to eat from the Tree of Knowledge of Good and Evil, and how they were expelled from the garden after they disobeyed Him, having been tempted by a serpent, and ate the fruit. As part of the Expulsion, cherubim and a flaming sword were stationed at the entrance to the garden, in order to prevent man from returning and eating from the Tree of Life.

Could the sword mean the sword wielding Ultima weapon that is guarding Eden itself.

Others point out that the world of Eden's time was destroyed during Noah's Flood and it is therefore impossible to place the Garden anywhere in post-flood geography. There is also an attempt to tie this with the mystical sunken land of Atlantis.
If it is flood so it could possible be sunken and you find Eden deep within the sea with a sword wielding monster guarding/having it.
That's really interesting!!!

I always wondered what Eden was...