Hitting at least 3 enemies with an attack, increases your damage by 24-36% for 3 seconds.
+4-10% Strength for 2s on Hit (Same Enemy). Stacks 5 times.
+4.5-6% Close Range damage on Repeated Hit. Stacks 5 times.
+1-4 Burn Stack(s) on Critical Hit to a maximum of 3-12 Stack(s).
(writing of detailed guide in-progress)