C'est cohérant avec un Lore warden!

Scholastic (Ex)
Lore wardens gain 2 additional skill ranks each level. These ranks must be spent on Intelligence-based skills. All Intelligence-based skills are class skills for lore wardens.

Know Thy Enemy (Ex)
At 7th level, a lore warden can take a standard action to study a specific target in sight. He must make a Knowledge check to determine the target’s abilities and weaknesses as part of this standard action. If successful, the lore warden not only notes the appropriate abilities and weaknesses, as detailed under the Knowledge skill, but also gains a +2 competence bonus on all attack rolls and weapon damage rolls made against that enemy. Note that this bonus on attack and damage rolls applies only to that specific creature. This bonus lasts for the duration of an encounter, or until the lore warden attempts a new Knowledge check to use this ability on a different target.