Frima (Treasure)
Iron 
Sniper Rifle 
Supporter 
Burst 1 
Tetra Tier 4 ... I Want To Sleep
Unlocks at: Phase 1
■ Activates when hitting a target with Full Charge.
Sleepy: DEF ▼ 4%, stacks up to 5 times for 10 sec.
■ Activates when hitting a target with Full Charge for 6 times. Affects self when Sleepy is fully stacked.
Wake up: Normal attacks deal true damage for 10 sec.
... Ah
Unlocks at: Phase 3
■ Activates when attacking with Full Charge. Affects all allies.
Max HP ▲ 6.09% for 5 sec.
■ Activates when attacking with Full Charge. Affects all allies when in Wake Up status.
True Damage ▲ 28.16% for 5 sec.
… Annoying
Unlocks at: Phase 2
■ Affects 10 enemy targets with the highest DEF.
Deals 101.66% of final ATK as damage.
DEF ▼ 9.86% for 10 sec.
■ Affects all allies.
Max HP ▲ 30.26% for 4 sec.
■ Activates when in Wake Up status. Affects all allies.
True Damage ▲ 49.97% for 10 sec.
Skill recommendations
Build
CUBES
Adjutant will help her skills a lot with the extra Charge Speed. If not levelled up, Resilience it's a good pick.
OL GEAR
Max ammo capacity and charge speed are priority. You'll have an easier time maintaining her buffs.
Solo Raid Usage
This is based on the top 50 players of all NIKKE servers combined. Data is from enikk.app, check their website for a lot more raid data.
Pros & Cons
- Underwhelming kit even with a treasure considering how expensive is to build and fully invest the gear, doll, dupes and skill materials