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 15%, Bonus Critical Damage of 2d12, and Critical Multipler of x2 Arrow Barrage - +2d6 Bonus Critical Damage, +15% Additional Chance to Score a Critical Punishing Rain - Adds +4 to Stun Duration and +1 to the Save DC Keen Eye All, Scout Gatekeeper