User blog:Usagi Kenshin/Help deciding my characters bankai?

Name: Kenshin Usagi

Race: Visored

Rank while in the Gotei 13: Ex captain of divsion 7 210 year ago

Zanpakuto: Ookamikage

Shikai ability: As soon as the command "Tear through the unworthy" is uttered a shadow like illision appears and shows the death of his opponent

Takes the shape of an arm blade

Bankai: Dai ōkami no kage { greater wolf shadow}

I haven't figured out the bankai's special ability yet

Help and or criticism would be helpful n_n