Recently, I swapped venomous claw for molten whip on my bar, the new changes that allow a stack of 135 weapon and spell damage for 5 seconds, paired with noxious breath's initial hit buff, I've found that it really helps burst and heals as a Stam dk, especially since I use cauterize.
As a dizzy swing dk, noxious breath followed by dizzy into another noxious is really bursty, and adding a leap and execute is almost overkill.
Molten whip's stack is really easy to keep at 3 in combat, so I'd like to know which you prefer, venomous or molten.