Cumbrous Dodge

(Savage Species, page 31, DnD 3.0)

[General]

You have a chance to dodge attacks that hit you, but at a cost.

Prerequisite

Tumble 4 ranks

Benefit

You may activate this feat as a free action. You gain a +2 bonus to your Armor Class for the rest of the current encounter. At the end of the encounter, you are fatigued. For details on fatigue, see the Condition Summary in Chapter 3 of the DUNGEON MASTER's Guide.