Oh wait nevermind it's just the Blade of Athena.
Ha, I fell for it.
Blade of Athena is the BEST sword, L1+S is one of the fastest attacks and a combo starter. The L1+T really helps especially in 2v2 (which is the most interesting mode imo) and in MoC. In addition to this the shield which surrounds you after L1+S (you have to use it in the air) is a life saviour, it saved me from a combo countless times.
Gladiator Sword has the exact same move @^
Except the with the Gladiator Sword, I can 100% someone xD