+40-100% Critical Chance on your next Melee Attack after Special Attack Kill.
Hitting at least 3 enemies with an attack, increases your damage by 24-36% for 3 seconds.
+7-10% Reload Speed for 4 seconds after Close Kill. Stacks 5 times.
+10% Critical Chance for every 0.3-0.45 second while aiming. Stacks 10 times. Discharges all stacks upon firing.
The idea here is that you do not actually need anything but Invocation of Death when using the Eviscerator - since you can force crits out of bloodthirsty every swing or every other swing to your taste.