Hailstones

In the Frost Mage talent tree, Hailstones sits in the Frost specialization talents, row 9 of 11. It is a single-point node. Its row opens once 20 points are spent in Frost Talents.

Connected above

The tree draws a line into Hailstones from Rimecaster.

• 
  Rimecaster2 ranks

  Frostfire Bolt and Glacial Spike damage increased by 10%.

Connected below

Hailstones leads on to Comet Storm.

• 
  Comet Storm

  Casting Ray of Frost replaces your Ray of Frost with Comet Storm, calling down a series of 7 icy comets on and around the target, that deals up to Frost damage to all enemies of its impacts. Each Comet Shatters 1 stacks of Freezing.

Same row

Also on this row: Freezing Winds, Improved Flurry, Glacial Assault, Crystalline Refraction, Summon Water Elemental or Lonely Winter and Glacial Chill or Glacial Shatter.

• 
  Freezing Winds

  Shattering enemies inside your Blizzard increases Shatter's area damage by 15%.

• 
  Improved Flurry

  Flurry fires 1 additional missiles.

• 
  Glacial Assault

  Flurry has a 12% chance each hit to call down an icy comet, crashing into your target and nearby enemies for (225% of Spell Power) Frost damage. Applies 1 stacks of Freezing.

• 
  Crystalline Refraction

  Ray of Frost generates 2 stacks of Fingers of Frost over its duration.

• 
  Summon Water Elemental

  Summons a Water Elemental to follow and fight for you.

• 
  Lonely Winter

  Spell damage increased by 3%.

• 
  Glacial Chill

  Glacial Spike deals 5% increased damage and applies 2 additional stacks of Freezing.

• 
  Glacial Shatter

  Glacial Spike no longer applies Freezing, and instead Shatters 5 stacks of Freezing.