Sigrid Skills, Kit, and Mindscapes

The 4th hit of Basic Attack: Frost-Tipped Spear, as well as EX Special Attack: Scattered Jade, EX Special Attack: Shattered Jade, Assist Follow-Up: Devouring Frost, Chain Attack: Encroaching Ice, Ultimate: Frozen Heavens, and Dodge Counter: Counterthrust are considered Unbridled Spear attacks.
Whenever Sigrid uses and hits an enemy with any Unbridled Spear while not in the Aerial Patrol Spear state, she enters the Aerial Patrol Spear state and gains 1 use of Basic Attack: Converging Spear that cannot be stacked.
While in the Aerial Patrol Spear state, when Sigrid hits an enemy with an Unbridled Spear skill, the Aerial Patrol Spear state is refreshed and she gains 1 use of Basic Attack: Converging Spear that cannot be stacked.
When triggering or refreshing Aerial Patrol Spear, its duration decreases as the stage of Basic Attack: Converging Spear increases. At stage 1/2/3, its duration is 8/7/6s.
When Aerial Patrol Spear ends, the stage of Basic Attack: Converging Spear is reduced by one, to a minimum of stage 1.
Activating or refreshing Aerial Patrol Spear increases Sigrid's CRIT Rate by 66% for 8s. Repeated triggers extend the duration by 8s, up to a maximum of 40s.
When Sigrid hits a Stunned enemy while in Aerial Patrol Spear, the Stun DMG Multiplier of her DMG dealt to the target is increased by 20%.

When another character in your squad is a Support or Stun character:
Sigrid's ATK increases by 120. This effect scales with character level, with each level providing an additional increase of 12, up to a maximum increase of 840.
DMG increases by 15% when hitting enemies in the Contamination state.

Upon activating the 3rd stage of Basic Attack: Converging Spear, enters the Aerial Patrol Spear and gains 1 additional activation of Basic Attack: Converging Spear. When activations exceed the stored Basic Attack: Converging Spear's activation limit, the next Basic Attack: Converging Spear's final hit deals an additional 100% of ATK as Ice DMG. Sigrid's ATK increases by 25%.

PEN Ratio of Unbridled Spear attacks and Basic Attack: Converging Spear increases by 24%. The duration of Aerial Patrol Spear is extended by 2s. Sigrid's Decibel Generation Rate increases by 10%.

Basic Attack, Dodge, Assist, Special Attack, and Chain Attack Lv. +2

Each time upon gaining Aerial Patrol Spear, DMG dealt increases by 18% for 8s. Repeated triggers extend the duration by 8s, up to a maximum of 40s.

Basic Attack, Dodge, Assist, Special Attack, and Chain Attack Lv. +2

When Basic Attack: Converging Spear's 1st/2nd/3rd stage's final hit lands, it deals an additional 80%/90%/100% ATK as Ice DMG. There is no more limit on the number of times Sigrid can enter the Formation Breaker state upon hitting a Stunned enemy with Chain Attack: Encroaching Ice. Formation Breaker state's Basic Attack: Converging Spear will activate faster.