Your spell-like ability leaves mental scars.

Prerequisite(s): Spell-like ability at caster level 4th or higher.

Benefit(s): Choose one of your spell-like abilities, subject to the restrictions described in this feat. You can use the chosen spell-like ability as a scarring spell-like ability three times per day (or less, if the ability is normally usable only once or twice per day).

When you use a scarring spell-like ability, a target that fails its saving throw against the spell-like ability takes a –2 penalty on saving throws against emotion and fear effects you create, and a –1 penalty on saving throws against other emotion and fear effects, for the next 24 hours. If the spell-like ability doesn’t allow a saving throw, you can’t choose to enhance it with this feat. Penalties from multiple scarring spell-like abilities don’t stack. This feat can be applied only to spell-like abilities with the emotion or fear descriptor.