How to boost special abilities?

[silverwolfer]

The usual things like (10 + class level + some mod ) , besides raising the mod, are there any other outside ways you can raise SU and SP abilities?

[Aracor]

Ability Focus (http://www.d20srd.org/srd/monsterFeats.htm#abilityFocus)

[Biffoniacus_Furiou]

It usually depends on the ability itself.

Rather than buffing the ability, you could try debuffing your opponent(s) instead. The Shaken (http://www.d20srd.org/srd/conditionSummary.htm#shaken) condition applies a -2 penalty to all saves, and fear effects are easy to dish out (http://brilliantgameologists.com/boards/index.php?topic=3809.0). Sickened and a Blackguard's Aura of Despair each give another -2 to all saves. Entangled is a -2 to Reflex saves, and Fatigued/Exhausted are -1/-3 to Reflex saves. The Unseelie Fey template from Dragon Compendium gives an ability that causes adjacent opponents to take a penalty to saving throws equal to your Cha bonus.