Flash of Lightning

In the Elemental Shaman talent tree, Flash of Lightning sits in the Elemental specialization talents, row 3 of 11. It is a single-point node.

Connected above

The tree draws a line into Flash of Lightning from Earthquake.

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  Earthquake

  Causes the earth within 8 yards of your target to tremble and break, dealing Nature damage over 6 sec and has a 5% chance to knock the enemy down. Multiple uses of Earthquake may overlap. This spell is cast at your target.

Connected below

Flash of Lightning leads on to Lightning Capacitor and Storm Frenzy.

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  Lightning Capacitor

  While Lightning Shield is active, your Nature damage dealt is increased by 8%.

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  Storm Frenzy

  Reduces the cast time of Lightning Bolt, Tempest, and Chain Lightning by 15%.

Same row

Also on this row: Tectonic Collapse or Aftershock and Molten Wrath or Master of the Elements.

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  Tectonic Collapse

  Earth Shock, Elemental Blast, and Earthquake deal 20% increased damage.

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  Aftershock

  Earth Shock, Elemental Blast, and Earthquake have a 25% chance to refund all Maelstrom spent.

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  Molten Wrath

  Lava Burst deals 10% additional damage.

• 
  Master of the Elements

  Casting Lava Burst increases the damage or healing of your next Nature or Frost spell by 15%.