Spellscorch

Source Advanced Race Guide

• Type poison (injury); Save Fort DC 14;
• Onset -; Frequency 1/rd. for 4 rds.;
• Effect see text; Cure 1 save;
• Cost 200 gp/dose

Refined from rare underground crystals, this poison causes a burning headache that impedes spellcasting. If the target fails its Fortitude save, for the next minute the target must make a Concentration check with a DC equal to 10 + spell level to cast a spell, and all other concentration checks to cast spells take a -5 penalty.