Shield Slam

Improved Shield Bash (PH) , Shield Charge (CW) , base attack bonus +6,

As a full-round action or as a charge action, you may make an attack with your shield against an opponent. If you hit, you force the target damaged by this attack to make a Fortitude saving throw (DC 10 + 1/2 your character level+your Str modifier) in addition to dealing damage normally. A defender who fails this saving throw is dazed for 1 round (until just before your next action). Constructs, oozes, plants, undead, incorporeal creatures, and creatures immune to critical hits cannot be dazed.

A fighter may select Shield Slam as one of his fighter bonus feats.

As a full-round action or as a charge action, you may make an attack with your shield against an opponent. If you hit, you force the target damaged by this attack to make a Fortitude saving throw (DC 10 + 1/2 your character level+your Str modifier) in addition to dealing damage normally. A defender who fails this saving throw is dazed for 1 round (until just before your next action). Constructs, oozes, plants, undead, incorporeal creatures, and creatures immune to critical hits cannot be dazed.

A fighter may select Shield Slam as one of his fighter bonus feats.

You can use your shield to daze your opponent.