Magic Sensitive

(Complete Mage, page 44, DnD 3.5)

[Reserve]

You literally see the emanations of magic around you.

Prerequisite

Ability to cast 3rd-level spells

Benefit

As long as you have a divination spell of 3rd level or higher available to cast, you can sense magical auras (as if you had cast detect magic). The range of your detection is equal to 5 feet per level of the highest-level divination spell you have available to cast. Activating or concentrating on this ability requires a standard action. As a secondary benefit, you gain a +1 competence bonus to your caster level when casting divination spells.