Ability Focus

(Savage Species, page 30, DnD 3.0)

[General]

Choose one of your special attacks. This attack becomes more potent than normal.

Prerequisite

Special attack

Benefit

Add +2 to the DC for all saving throws against the special attack on which you focus.

Special

You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new special attack.