Benefit: The magus can sniff out other spellcasters. By spending 1 point from his arcane pool, the magus gains the scent special quality for 1 hour per magus level. This scent can only detect creatures capable of casting spells or using spell-like abilities. Additionally, while this effect persists, the magus can attempt a Spellcraft check as a move action to determine the highest level spell a detected creature is capable of casting (DC = 10 + the creature's caster level). The magus can only attempt this Spellcraft check once per creature per 24 hours.