SRD:Mental Barrier

You project a field of improbability around yourself, creating a fleeting protective shell. You gain a +4 deflection bonus to Armor Class.

You can manifest this power instantly, quickly enough to gain its benefits in an emergency. Manifesting the power is an immediate action, like manifesting a quickened power, and it counts toward the normal limit of one quickened power per round. You can use this power even when it’s not your turn; however, you must manifest it prior to an opponent’s attack roll in order to gain this power’s benefit against that attack.

Augment: You can augment this power in one or both of the following ways.

1. If you spend 4 additional power points, the deflection bonus to Armor Class increases by 1.

2. For every additional power point you spend, this power’s duration increases by 1 round.