Nilou

• Changes Dendro Cores into a more powerful version called Bountiful Cores.
• Applies strong debuffs to enemies from her second constellation.
• Bountiful Cores do great damage against multiple enemies.

Here best weapon is her sig Key of Khaj-Nisut

Other good weapons for Nilou are

• Freedom Sworn
• The Dockhand's Assistant
• Xiphos' Moonlight
• Iron Sting

Her best artifact set is two piece Tenacity of the Millelith two piece Vourukasha's Glow

Artifact Main Stats

• Sands: HP% or Energy Recharge
• Goblet: HP%
• Circlet: HP%

Artifact Sub-Stats

HP%, Energy Recharge, Flat HP, Elemental Mastery

It is recommended to have atleast 170% Energy Recharge

Some good teams for her are

Triple

• Yelan
• Nilou
• Nahida
• Kokomi

Double

• Nilou
• Nahida
• Kokomi
• Collei

Nilou Talent Priority

1. Elemental Burst
2. Elemental Skill
3. Normal Attack

Nilou Ascension Materials

• Varunada Lazurite Sliver ×1
• Varunada Lazurite Fragment ×9
• Varunada Lazurite Chunk ×9
• Varunada Lazurite Gemstone ×6
• Mora ×420000
• Fungal Spores ×18
• Luminescent Pollen ×30
• Crystalline Cyst Dust ×36
• Padisarah ×168
• Perpetual Caliber ×46

Nilou Talent Materials

• Mora ×4957500
• Crown of Insight ×3
• Tears of the Calamitous God ×18
• Fungal Spores ×18
• Luminescent Pollen ×66
• Crystalline Cyst Dust ×93
• Teachings of Praxis ×9
• Guide to Praxis ×63
• Philosophies of Praxis ×114

I dont own this character