Just after leaving Tunaras, Leon encountered a magic ship, which was a Tyrant Ship.
The Tyrant Ship is carved by Beholders using their dissociation beams from stone, and they use these ships to roam the Astral Sea, searching for worlds to conquer and enemy Beholders to destroy.
No two Tyrant Ships look exactly alike, but they all have one or more features reminiscent of their creators, such as bulbous shapes and eye stalks.
The spherical room on the Tyrant Ship's command deck is akin to a magic exorcism rudder that only a Beholder can tune to, even if he captures it, he can't operate it. Because of this, Leon didn't attack that Tyrant Ship until he remembered that killing a Beholder could yield its eyeballs, which are rare alchemy materials.
Leon also didn't know why, but on his way to find a Color Pool, he often encountered Celestial Creatures, Evil Demons, and mortal adventurers. Could it be that everyone is searching for Color Pools, walking the same path?