Name: Sixth Sense
AP Cost: None
Effect: Sixth Sense allows Kuja to detect the magical signatures of other beings, in short he is able to sense the AP of another being be that a zombie mage, possessed suit of armor, human, demon, Genome, and what not. Now it isn't that great since long range sensing is very difficult as all beings have some limited amount of magical energies in them and at longer ranges it starts to blur all together.
But if someone was to come within fifteen feet of Kuja he would know instantly but another side effect of this is if a spell is fired at him he will noticed it if it comes within twenty feet of him as the magical energies put out by a spell is far easier to notice than the magical energies hidden in another creature's body.
((I am more than willing to to lower the range of the stuff, not exactly sure what I can and can't get away with on this.))