Keen Eye increases the chances of a critical and the damage caused by criticals when using Archery based special attacks. The impact of Keen Eye varies depending on the special attack as follows: Pregnable Arrow - Critical Chance of 10%, Bonus Critical Damage of 1d12, and Critical Multipler of x2 Arrow Barrage - +1d6 Bonus Critical Damage, +10% Additional Chance to Score a Critical Punishing Rain - Adds +2 to Stun Duration Keen Eye All, Scout Gatekeeper