Sonic Shield

Caster Level(s): Bard 3, Duskblade/Sorcerer/Wizard 5
Innate Level: 5
School: Evocation
Component(s): Verbal, Somatic
Range: Personal
Area of Effect / Target: Self
Duration: 1 round/level

This spell grants you a +4 deflection bonus to AC. In addition, anyone who successfully hits you with a melee attack takes 1d8 points of sonic damage and must make a Fortitude saving throw or be knocked 5 feet away from you into an unoccupied space. If no space of sufficient size is available for it to enter, it instead takes an extra 1d8 points of damage.