C1: Radiant Blades of Centzon Mimixcoah

When she uses the Elemental Skill Dawnfrost Darkstar, Citlali gains the "Opalstar Vestments" effect until Itzpapa leaves the field. During this time, she will obtain 10 stacks of Stellar Blade. When a nearby active character other than Citlali deals DMG using Normal, Charged, or Plunging Attacks, or Elemental Skills and Bursts, 1 stack of Stellar Blade will be consumed to increase the DMG dealt by 200% of Citlali's Elemental Mastery.
After nearby party members trigger Frozen or Melt, Citlali will gain another 3 stacks of Stellar Blade. This effect can trigger once every 8s.

Using the Elemental Skill Dawnfrost Darkstar will reset Stellar Blade stacks.
Additionally, when Citlali is using her leap, or is Aiming or using her Charged Attack in mid-air, her Phlogiston consumption is decreased by 45%.

C2: Heart Devourer's Travail

Citlali gains 125 Elemental Mastery, and other characters shielded by her Opal Shield, or who have Itzpapa following them, gain 250 Elemental Mastery.
Additionally, when the Elemental Skill Dawnfrost Darkstar is used, nearby active characters will also be granted an Opal Shield.

Also, the Passive Talent "Mamaloaco's Frigid Rain" has its effects enhanced:
While Itzpapa is on the field, after nearby party members trigger Frozen or Melt, the opponent(s) affected by this reaction will have their Pyro and Hydro RES additionally decreased by 20% for 12s. You must first unlock the Passive Talent "Mamaloaco's Frigid Rain" to gain access to the above effect.

C3: Cloud Serpent's Feathered Crown

Increases the Level of Dawnfrost Darkstar by 3.

C4: Death Defier's Spirit Skull

While the Elemental Skill Dawnfrost Darkstar is active, when Itzpapa's Frostfall Storm hits opponents, an additional Obsidian Spiritvessel Skull will be summoned. When a Spiritvessel Skull summoned this way explodes, it deals 1800% of Citlali's Elemental Mastery as Nightsoul-aligned AoE Cryo DMG and restores 16 Nightsoul points and 8 Energy for Citlali. This effect can trigger once every 8s. This DMG is not considered Elemental Burst DMG.

C5: Nemontemi's Hex

Increases the Level of Edict of Entwined Splendor by 3.

C6: Teoiztac's Secret Pact

After being summoned with the Elemental Skill Dawnfrost Darkstar, Itzpapa will always be in the Opal Fire state, and when Nightsoul points are exhausted, this state will not end.
Additionally, when Dawnfrost Darkstar is used, Itzpapa will consume all Nightsoul points, and while it is on the field, it will continuously consume Nightsoul points. Each Nightsoul point consumed in this way will grant Citlali 1 "Cifra of the Secret Law" point.
A maximum of 40 such points can be gained, and each point Citlali possesses will grant all nearby party members a 1.5% Pyro and Hydro DMG Bonus, and increase the DMG Citlali deals by 2.5%.
When Itzpapa leaves the field, or upon using Citlali's Elemental Skill again, all "Cifra of the Secret Law" points she has will be removed.