Endless Enigma

Calamity weapon tailor-made for her: its Blueprint is sold at the Memento in the Immersive Theatre from November 10. Swords are one of her proficiencies, so its Potentials activate. Recommended path, the whole Endless branch: Desire, because Electro Coordination consumes Electro Disruption with every Electrified Sniper Bullet; Might, since all her damage is Skill DMG; Answer, as 30 Steady Aim stacks give +120% Skill Speed and [Inquiry] stacks push her past the 220% threshold; Pierce (+35% PEN Stats) over +60% Morale, which she already stacks heavily through her Intron IV (up to +90%). Obscurity, which builds Calamity on every Skill DMG hit, is the first Potential to buy back.

永久の決別

The best pick until Endless Enigma arrives: Morale +30%, and +50% Skill Intensity (up to 3 stacks) when an Electro character uses their Ultimate. It is a Greatsword, outside her proficiencies: unlock Greatsword as her additional proficiency to get the +20% ATK back.

ケーフィヒフォーゲル

Morale +30%: worth it for that stat alone if Eternal Farewell is unavailable. Its effect only helps Umbro characters.

生きる重さ

Signature weapon: CRIT Damage +125%, and +150% Skill Intensity while an Electro character is shooting. Her Honed Technique passive raises Arcshot and Volt Rifle damage based on her ranged weapon's CRIT Chance and CRIT Damage: this weapon's crit counts twice.

帰墟棘輪

Also CRIT Damage +125%: the stopgap until Blessed Burden is forged.