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Assassin (Ascendant passive)
10% chance to gain a Power Charge on Critical Strike
+1% to Critical Strike Chance
10% increased Movement Speed if you've Killed Recently
Damage from your Critical Strikes cannot be Reflected 
This passive grants additional base critical strike chance, a chance to poison on hit, a chance to generate a power charge on critical strike, increased movement speed if you've killed in the past 4 seconds, and causes critical strikes to unable to be reflected.