This weapon fits perfectly for Nilou because the decrease in ATK doesn't necessarily affect Nilou since she scales on HP. Moreover, Teyvat exploration tips this weapon has a 40 percent chance of resetting the cooldown of your Elemental Skill whenever you deal damage to an enemy that is considered Elemental Skill dam

If you're using Nilou as off-field support, you wouldn't need to use her Elemental Burst as much. This makes Energy Recharge a less-priority stat, making this weapon better than Xiphos' Moonlight. It buffs all your DMG whenever you deal Elemental DMG by 12 percent at refinement five.