Mage Slayer
General feat
Mage Slayer is a D&D 3.5 feat (General) from CAr, p. 81. You have studied the ways and weaknesses of spellcasters and can time your attacks and defenses against them expertly.
Prerequisite
Spellcraft 2 ranks, base attack bonus +3,
Benefit
You gain a +1 bonus on Will saving throws. Spellcasters you threaten may not cast defensively (they automatically fail their Concentration checks to do so), but they are aware that they cannot cast defensively while being threatened by a character with this feat.
Special
Taking this feat reduces your caster level for all your spells and spell-like abilities by 4.
Description
You have studied the ways and weaknesses of spellcasters and can time your attacks and defenses against them expertly.