Blizzard has applied some class change hotfixes to the 10.2 PTR which includes Assassination Rogue buffs.
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Talents (2)
Using Mutilate on a target afflicted by your Rupture and Deadly Poison applies Caustic Spatter for 10 sec. Limit 1.
Caustic Spatter causes 35%45% of your Poison damage dealt to splash onto other nearby enemies, reduced beyond 5 targets.