Looking at the Elemental Shaman mastery in World of warcraft it states that:

Your Lightning Bolt, and Chain Lightning casts have a 15.0% chance to trigger a second cast on the same target for 85% of normal damage and generates less Maelstrom.

How much Maelstrom is generated on each overload for lightning bolt and chain lightning, per target hit?

With the talent "High Voltage" that has a 50% chance of normal to proc a 3rd overload, will this give the same amount of Maelstrom?


I was initially under the impression that maelstrom generated from overload procs was 50% for all spells. However, I tested this on the training dummies in Dazar'alor and found this is not the case.

The following test results are from patch 8.0.1 (October 9th, 2018):

  • Lightning bolt overload and high voltage procs generate 3 maelstrom (37.5% of base).
  • Chain lightning overload and high voltage procs generate 2 maelstrom (50% of base).
  • Lava burst overload procs generate 4 maelstrom (40% of base).

The maelstrom granted is different for each spell, which explains why the mastery description is vaguely worded.

  • 1
    Ele main here, this is correct. And the High Voltage Overload gives that 50% of normal again. – SaintWacko Oct 9 '18 at 16:55
  • @SaintWacko I did some testing today and found that only chain lightning grants 50% of base. Do you see the same results I have seen in my updated answer? – Alex Myers Oct 10 '18 at 0:27
  • 1
    I've searched my combat logs and yes, only CL grants 50%. Your numbers are correct. – dly Oct 10 '18 at 9:58
  • Oh, interesting! I wonder when that changed... – SaintWacko Oct 10 '18 at 16:33

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