Duality
Casting Pyroblast has a chance to also cast a Glacial Spike, dealing (366.2% of Spell Power) Frost damage.
Tree position
In the Fire Mage talent tree, Duality sits in the Frostfire hero talent tree, row 2 of 5. It is a single-point node.
Connected above
The tree draws a line into Duality from Frostfire Bolt.
Frostfire BoltLaunches a bolt of frostfire at the enemy, causing (259.4% of Spell Power) Frostfire damage, slowing movement speed by 50%, and causing an additional (21.6% of Spell Power) Frostfire damage over 8 sec. Applies 1 stacks of Freezing.
Connected below
Duality leads on to Molten Chill.
Molten ChillYour Frostfire spells apply Ignite, dealing an additional 30% of their damage over 9 sec.
Same row
Also on this row: Imbued Warding or Meltdown, Frostfire Empowerment and Elemental Affinity or Flame and Frost.

MeltdownYou melt slightly out of your Ice Block and Ice Cold, allowing you to move slowly during Ice Block and increasing your movement speed over time. Ice Block and Ice Cold trigger a Blazing Barrier when they end.
Frostfire EmpowermentCasting Frostfire spells has a 10% chance to activate Frostfire Empowerment, causing your next Frostfire Bolt to be instant cast, deal 60% increased damage, and explode for 60% of its damage to nearby enemies. Damage reduced beyond 5 targets.

Flame and FrostCauterize resets the cooldown of your Frost spells with a base cooldown shorter than 4 minutes when it activates.]
Talent trees
Duality is in the talent tree of 3 specializations. Mage: Arcane (DPS), Fire (DPS), Frost (DPS).
Duality Changes by patch
Tracked changes to this talent between game data builds, newest first.
- First tracked in the game data (patch 12.1.0)