Mastery

Mastery is a Behavior Rune that applies an additional effect when the spell damages an enemy, based on the Essence used. Enemies affected by Mastery will have the Rune floating above them. Enemies immune to an Essence will also be immune to the matching Mastery, such as blue goblins being immune to freezing. Certain Wands can strengthen the Mastery effects.

Obtaining
Sky Temple - Puzzle Mechanism''' When coming back to the arena all orbs will line up and a chest will appear.
 * Ice Arena: While following the road through the Sky Temple, Zia will reach an "Ice Arena" where she's locked in and is forced to fight goblins and goblin mages. On the north end of the Sky Temple is a Celestial Puzzle door to be solved. Light the torch beneath it. The first mechanism of the arena is set to function.
 * From the arena go south. There's a small campsite with the second torch for the mechanism.
 * After following the way farther it turns east and Zia finds herself in front of a detonation rock door, where there are three detonation barrels behind them. She can either use the Right Fireball to light them or use the Detonation Rune (which she'll get a little farther in the Sky Temple) to destroy it. After the rock door go right and light the barrel near the stairs. Behind the rocks is the third torch for the mechanism.
 * The forth torch is below the platform where Zia gets the Detonation Rune and fights the bug like creature.
 * After defeating the bug like creature advance left from the puzzle. Near the next Sky Shard tech is a detonation rock door. Destroy it. Behind is the last torch for the mechanism.

Igni
Igni Mastery deals additional damage to the target over for the next 4 seconds. An enemy can only have one burning effect at a time, with further hits resetting the burn duration.

Aura
Aura Mastery deals additional damage to enemies close to the target. Enemies hit by Mastery can chain to further enemies, though a single enemy can only be hit by Mastery once per spell.

Aqua
Aqua Mastery freezes the target, preventing the enemy from moving or taking action for 4 seconds. Enemies will be always be frozen for the full duration; damage will not end the effect early.

Gaea
Gaea Mastery will knock the target back, similar to Push. Enemies may also be knocked down, requiring them to stand up before continuing to fight Zia.

Notable Interactions

 * When directly linked with Left/Right, a different elemental effect is applied based on the Rune used. For example, Igni spells can chain or freeze. The sequence is represented in the spell menu:

"Aura ←→ Igni ←→ Aqua ←→ Gaea ←→ Aura"
 * When linked with Push, the knockback distance stacks with Gaea Mastery.
 * Time does not have an effect on Mastery.