Catastrophe (Final Fantasy V)

Catastrophe is a boss and one of the Demons of the Rift in Final Fantasy V. It is blocking the exit of the dungeon in the Interdimensional Castle, and must be fought in order to proceed.

Strategy
Catastrophe likes to attack the whole party with an Earth Shaker attack. Other than that, it doesn't like to do much. As such, casting Float on the entire party before the battle should ensure victory. At this point in the game, Catastrophe shouldn't be that much different from the regular enemies.