Marth (SSB4)/Back aerial
An upward crescent slash behind him in an inward swipe. Has the interesting property of turning Marth around, changing the direction he is facing. Similar use to his forward aerial, although with more knockback and a smaller hitbox. Can be used a few frames before landing to catch opponents with a tipped blow, with correct spacing. Another very powerful move when tippered considering its speed it can KO near the edge at around 90%, and around 145% at the stage's center.