Clarity of Vision (3.5e Feat)
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Clarity of Vision [Psychic]
Prerequisite: , Clairvoyance
Benefit: You have a good chance of spotting invisible creatures and objects, and seeing through illusions. You gain an immediate Spot check with a DC of 10 plus twice the spell level of the illusion (for naturally transparent creatures such as Invisible Stalkers, the DC is 10 plus the creature's CR, or the listed Spot DC minus 10, whichever is lower). If you fail, you get another check 5-8 minutes later, then another 1-4 hours later, then every 1-4 days.
Note: Related to The Gift: an Alternative to "Psionics" (3.5e Variant Rule)