Armor of Swords

You conjure 6 glowing spectral swords that circle around you for the duration of the spell, until they run out, or until you dispell them. 

Whenever you take damage from a melee attack, from a creature within 5 feet of you the swords swing out dealing 2d6 slashing damage to creature that dealt the damage to you. Each time this happens one sword disappears, once all swords have disappeared the spell ends.

At Higher Levels. The swords deal an additional 1d6 damage for every 2 spell slot levels that you use above 2nd level.