TC1: Radiant Wingslash

Normal Attack
Performs up to 4 consecutive sword strikes.

Charged Attack
Consumes a certain amount of Stamina to perform a slash toward the front.

Plunging Attack
Plunges from mid-air to strike the ground below, damaging opponents along the path and dealing AoE DMG upon impact.

TC2: Binary Form: Convergence and Division

Purify the substance of souls and wishes to undergo Essential Transmutation. While transmuted, Durin's Elemental Skill Binary Form: Convergence and Division will be replaced with the special Elemental Skill Transmutation: Confirmation of Purity, and the Normal Attack Radiant Wingslash will be replaced with the special Elemental Skill Transmutation: Denial of Darkness.

Transmutation: Confirmation of Purity
Deal 1 instance of AoE Pyro DMG to nearby opponents, reverse Essential Transmutation, and enter the Confirmation of Purity state for 30s.

Transmutation: Denial of Darkness
Deal 3 consecutive instances of Pyro DMG to opponents in front, reverse Essential Transmutation, and enter the Denial of Darkness state for 30s.

When Durin enters the Confirmation of Purity or Denial of Darkness state while in battle, he will restore a certain amount of Elemental Energy. Elemental Energy can be restored this way once every 6s.

TC3: Principle of Purity: As the Light Shifts

Unleash the power of the "Beast" in different ways. Durin can use different Elemental Bursts based on his Essential Transmutation state.

Principle of Purity: As the Light Shifts
When Durin is in the Confirmation of Purity state, he will use the Elemental Burst Principle of Purity: As the Light Shifts, dealing 3 instances of AoE Pyro DMG to opponents in front, and manifesting his power in the Dragon of White Flame form. The Dragon of White Flame will follow the current active character and attack nearby opponents at intervals, dealing AoE Pyro DMG. This DMG is considered Elemental Burst DMG.

Principle of Darkness: As the Stars Smolder
When Durin is in the Denial of Darkness state, he will use the Elemental Burst Principle of Darkness: As the Stars Smolder, dealing 3 instances of AoE Pyro DMG to opponents in front, and manifesting his power in the Dragon of Dark Decay form. The Dragon of Dark Decay will follow the current active character and periodically attack a single nearby opponent, dealing Pyro DMG. This DMG is considered Elemental Burst DMG.

When Durin is not in a special state as a result of Essential Transmutation, he will use the Elemental Burst Principle of Purity: As the Light Shifts.

TP1: Light Manifest of the Divine Calculus

Durin will trigger different buffs depending on the form that his power manifests as when he unleashes his Elemental Burst. When that form is:

Dragon of White Flame
After nearby party members trigger Burning, Overloaded, Pyro Swirl, or Pyro Crystallize reactions on an opponent, or deal Pyro DMG or Dendro DMG to an opponent affected by Burning, that opponent's Pyro RES, and the RES for the corresponding Element involved in the reaction, are decreased by 20% for 6s.

Dragon of Dark Decay
Durin's Vaporize DMG is increased by 40% and his Melt DMG is increased by 40%.

TP2: Chaos Formed Like the Night

After unleashing an Elemental Burst, Durin gains the Primordial Fusion of Forms effect for 20s: Durin gains 10 stacks of Primordial Fusion. When a periodic attack from Dragon of White Flame or Dragon of Dark Decay deals DMG, 1 stack of Primordial Fusion will be consumed to increase the DMG dealt by 3% of the original DMG for every 100 ATK. A maximum of 75% additional DMG can be dealt this way. When a single attack from Dragon of White Flame or Dragon of Dark Decay hits multiple opponents, only one stack of Primordial Fusion is consumed.
Primordial Fusion stacks are reset when the Elemental Burst is unleashed again.

TP3: Echoes of the Surging Earth

Gains 25% more rewards when dispatched on a Mondstadt Expedition for 20 hours.