Shield Block

(Tome of Battle: The Book of Nine Swords, page 60, DnD 3.5)

Devoted Spirit (Counter)

Level: ; Crusader 2
Prerequisite: Devoted Spirit maneuvers
Casting Time: 1 immediate action
Range: Personal
Target: You
Duration: Instantaneous

With a heroic burst of effort, you thrust your shield between your defenseless ally and your enemy.

As an immediate action, you can grant an AC bonus to an adjacent ally equal to your shield’s AC bonus + 4. You apply this bonus in response to a single melee or ranged attack that targets your ally. You can initiate this maneuver after an opponent makes his attack roll, but you must do so before you know whether the attack was a success or a failure.