Nefer Constellation Compare C0→C6

C0 = no constellation unlocked (base character) — the reference column so you can see what each constellation ADDS.

The Base DMG for Lunar-Bloom reactions caused by Nefer's Phantasm Performance is increased by 60% of her Elemental Mastery. This effect is also boosted by Veil of Falsehood.

Enhances the effects of the Ascension Talent A Wager of Moonlight: Extends Veil of Falsehood's duration by 5s, and increases its stack limit to 5, as well as causing Phantasm Performance to deal up to 140% of its original DMG. When Nefer unleashes her Elemental Skill Senet Strategy: Dance of a Thousand Nights, she will instantly gain 2 stacks of Veil of Falsehood. Additionally, when Veil of Falsehood reaches 5 stacks, or when the fifth stack's duration is refreshed, Nefer's Elemental Mastery will be increased by 200 for 8s instead.
You must first unlock the Ascension Talent "A Wager of Moonlight."

Increases the Level of Senet Strategy: Dance of a Thousand Nights by 3.
Maximum upgrade level is 15.

When Nefer is on the field and in the Shadow Dance state, you will gain Verdant Dew 25% faster.
Additionally, while Nefer is in the Shadow Dance state, nearby opponents will have their Dendro RES decreased by 20%. When Nefer exits the Shadow Dance state or after she strays a certain distance away from the opponents, this effect will be removed after 4.5s.

Increases the Level of Sacred Vow: True Eye's Phantasm by 3.
Maximum upgrade level is 15.

When Nefer unleashes Phantasm Performance, the second stage of DMG dealt by herself will be converted to deal AoE Dendro DMG equal to 85% of her Elemental Mastery. Additionally, when the attacks from Phantasm Performance end, an extra instance of AoE Dendro DMG equal to 120% of Nefer's Elemental Mastery will be dealt. All of the aforementioned DMG is considered Lunar-Bloom DMG dealt by Phantasm Performance.

Moonsign: Ascendant Gleam
Nefer's Lunar-Bloom DMG is elevated by 15%.