It can also use Whirlsand whenever the tentacles are exposed. Most importantly, you cannot attack Ruby Weapon while its tentacles are exposed and can only damage it while the tentacles are buried. Ruby Weapon will either have its tentacles in the sand or exposed during the fight and its actions differ depending on where the location of its tentacles. The majority of the preparation that needs to take place is to prevent characters from being removed from battle.
It has attacks that can completely remove a party member from the battle (called Whirlsand) and it has extremely high defense.
