Studied Ally

The slayer can study an ally or friendly creature he can see as a move action. The slayer gains a +1 bonus on checks and attack rolls to use the aid another action to help with that ally's skill checks, attacks, or AC. This bonus increases at the same rate as a slayer's studied target bonus. At 7th level, a slayer can study an ally as a move or swift action. A slayer's studied ally counts against the number of studied targets he can have active at once.