Sea Empress Sword

Poseidon's Sword is a weapon owned by Erza Scarlet

Appearance
Poseidon's Sword is a magic sword with an aquatic theme. The grip of the blade is composed of scales with the pommel having the appearance of a fish tail. The chappe of the sword is styled along the lines of a nautiloid's shell with a segmented guard along the dull back edge of the blade.

The blade itself is comprised of water in a sheepsfoot blade style when static. The water ripples along the length of the blade and flows whilst being swung by the wielder, with drops of water coming off of the blade.