Studied Target
A slayer can study an opponent he can see as a move action. The slayer
then gains a +1 bonus on Bluff, Knowledge, Perception, Sense Motive,
and Survival checks attempted against that opponent, and a +1 bonus on
weapon attack and damage rolls against it. The DCs of slayer class
abilities against that opponent increase by 1. A slayer can only
maintain these bonuses against one opponent at a time; these bonuses
remain in effect until either the opponent is dead or the slayer
studies a new target.
Track
Add half class level (+1 minimum)