The skill Killin' Time (499567) causes the buff Killin' Time (623101) which increases Physical Critical Hit Rate and Critical Damage for 7 seconds. The duration of this buff is only 7 seconds. Since this skill consumes 45 energy, that does not make much sense because after consuming half maximum energy, players can't deal much damage anymore.
Suggestion:
Change the duration of Killin' Time (623101) from 7 seconds to 15-20 seconds so that is makes the Rogue/Druid a little bit more attractive to play.
