When using any melee weapon with the Elven quality, combat maneuver checks attempted with that weapon as attacks of opportunity don’t themselves provoke attacks of opportunity.
While using Elven Battle Style, you may use your Intelligence bonus towards attack rolls with the weapon, in place of the normal Attribute modifier.
While using Elven Battle Style, any opponent that makes an attack against you and misses while you are fighting defensively or using total defense provokes an attack of opportunity from you.