"Sheer Venom:
This set can now proc on multiple targets from a single hit of an execute attack, but cannot refresh itself on targets.
This set now deals 8766 damage over 6 seconds, and deals up to 100% more damage to targets below 100%, rather than dealing 8428 damage over 6 seconds."
Unless I'm reading wrong, it behaves like an execute and does more damage the less hp the target has.
It's effectively a 2922 aoe dot after using an execute such as whirling blades / executioner (50% health) or assassin's blade (25% health). Will pair nicely with deadly strikes.
Venomous smite is probably stronger doing 2241 aoe dot after a crit