ToveHas Favorite Item

A Water Burst stage 1 (B1) Supporter Assault Rifle Nikke.
With her Favorite Item, she greatly boosts damage with Shotgun ally attack speed and the Miracle of Makeshifts ATK buff, giving her high value as boss support.
She contributes little outside Shotgun teams, so she is rarely a core pick.

Emergency-Crafted Bullets triggers every 10 normal attacks to charge ammo, and when it applies, it grants all allies Temporary Modification (Increased Max Ammunition Capacity, 3 stacks, 5 seconds) and Increased Critical Damage.

Modification Successful grants all allies Increased Critical Rate only when Temporary Modification is at max stacks, and continuously grants attack speed increase to Shotgun-wielding allies.

Miracle of Makeshifts grants all allies and Shotgun-wielding allies Increased ATK based on caster's ATK, copying the Temporary Modification stacks at activation. This Increased ATK value is fixed at the moment of activation and does not change with later stack changes. Its duration with her Favorite Item is 15 seconds.

Use Burst stage 1 while Temporary Modification is at 3 stacks.
Temporary Modification has a duration in its skill text (e.g., 5 seconds). If it is not refreshed by Emergency-Crafted Bullets within that time, stacks drop, losing the Modification Successful condition and turning off the Shotgun attack speed increase. Here, 5 seconds does not mean reloading takes 5 seconds; it is the duration of the stacks and effect. With her Favorite Item, it refreshes as long as normal fire continues, so it rarely breaks, and ammo and reload support mostly just reduce firing gaps.
Without a Shotgun DPS, the team's value drops sharply.

In Shotgun squads, Soline, Dorothy, Soda, Grave, Drake, Leona, Blanc, and Noir are swapped in to fit each slot.

Max Ammo, reload, and ammo refill help maintain Temporary Modification. If candidate Harmony Cubes differ a lot in level, prioritize the higher-level cube.

Miracle of Makeshifts scales with the caster's ATK, so ATK options have value. Max Ammo options help maintain Temporary Modification.

Written for the Favorite Item version only. The order is S1, S2, Burst. The 9/6/7 built for the non-Favorite Item chance-based Emergency-Crafted Bullets does not fit the Favorite Item (N normal attacks) version. The minimum is 3/7/7, and the recommended is 6/10/10 or 9/10/10. With S1 at 6, reaching 3 stacks by the first Full Burst can be tight, so raise it to 9 depending on rotation.

Used as Shotgun-focused squad support in boss content such as Special Interception. Range limits restrict her general use in story and Tower.

She can give Shotgun allies a high ATK buff and attack speed increase at the same time.
Her Increased Max Ammunition Capacity suits low-ammo weapon types.

If Temporary Modification breaks, the Shotgun attack speed increase turns off immediately.
She has no Burst cooldown reduction herself, so the team needs rotation support at stage 2.
Shotgun range limits make her hard to use widely in story and Tower.