C1: Part the Veil of Snow

The basic cooldown of the special Elemental Skill Northland Spearstorm is reduced to 4s.
Additionally, when party members trigger Lunar-Charged reactions, Flins will recover 8 Elemental Energy. This effect can occur once every 5.5s.

C2: The Devil's Wall

For the next 6s after using the special Elemental Skill Northland Spearstorm, when Flins's next Normal Attack hits an opponent, it will deal an additional 50% of Flins's ATK as AoE Electro DMG. This DMG is considered Lunar-Charged DMG.
Moonsign: Ascendant Gleam: While Flins is on the field, after his Electro attacks hit an opponent, that opponent's Electro RES will be decreased by 25% for 7s.

C3: Stranger in the Night

Increases the Level of Ancient Ritual: Cometh the Night by 3.
Maximum upgrade level is 15.

C4: Night on Bald Mountain

Flins's ATK is increased by 20%.
Additionally, his Ascension Talent "Whispering Flame" is enhanced: Flins's Elemental Mastery is increased by 10% of his ATK. The maximum increase obtainable this way is 220.

C5: Exile's Shadow

Increases the Level of Ancient Rite: Arcane Light by 3.
Maximum upgrade level is 15.

C6: Songs and Dances of Death

The DMG dealt to opponents by Flins's Lunar-Charged reactions is elevated by 35%.
Moonsign: Ascendant Gleam: All nearby party members' Lunar-Charged DMG is elevated by 10%.