At what time during the fight will you use your second Virmen's bite? Will you try to line it up with aMoC, Stampede and other cooldowns, or will you try to line it up with your trinket procs? Maybe you're trying to use it when you get a LnL proc?
What is the biggest dps increase, when should you use it? considering the fact that heroism gets popped at the start during your pre pot.