Lightning Strikes currently requires you to consume no less than 10 stacks of MSW to get the buff, you cannot consume 5 MSW+5 MSW to get the buff, it has to be exactly 10 stacks. This works entirely against the way the spec is designed and is counterintuitive to many talents in the spec tree that all builds of ours play.
It works against Thorim’s Invocation, it works against Totemic Momentum and it works against Elemental Tempo. These 3 talents have us spending below 10 all the time to get some form of CDR (elemental tempo), Hot Hands uptime increase (Totemic Momentum) or automatically spends MSW during Doom Winds when you press Stormstrike or Crash Lightning (Thorim’s Invocation).
Not being able to really play this talent in PvE is a bit of a hit to our potential single target damage. We just don’t have it up nearly enough to make it worthwhile since we consistently spend below 10 stacks of MSW. Talents like this one in the past always added up MSW stacks spent to get to the total required for x or y buff, like Legacy of the Frost Witch previously.
Please bug fix or update this talent so it works additively like everything else. Ie if you spend 5 stacks and then another 5 stacks that totals 10 so you get the buff.