How to get UR Mosquito Girl?

UR Mosquito Girl is the next big DPS for monster side, since the last main DPS which was UR G4. Sure if you can spare the BTs, I think she is a great addition to your team. But whether you have enough time to Extreme Challenge all your team (Assuming you took some previous meta units like UR FF), and enough gear is something you need to consider.

Request: 
UR Mosquito Girl Awakening Stone x1
UR Monster Evolution Stone x4
SSR Mosquito Girl

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Basic

Deals 120% ATK to a single target

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Ultimate
(Cost 2 Energy)

Increase own Hit by 50%, deals damage to enemies in a column with 2 consecutive strikes for 3000% ATK, triggers [Specialized Breakthrough] 1 times.
[Specialized Breakthrough]: Instantly removes [DMG Ignoration], increase ATK by 20%.

Ultra-Ultimate:
Hit 50% > 65%
DMG 300% > 4000%
S.Breakthrough 1x > 2x
S.Breakthrough ATK increase 20% > 40%

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Passive

Obtains 60% Non-Crit DMG Free. When any character acts, remove [Stun/Specialized Stun/Silence] from 1 ally
[Non-Crit DMG Free]: reduce all types of Non-Crit DMG, cannot co-exist with [Agility]

Extreme Passive:
Non-Crit DMG FREE 60% > 70%
Remove Stun/S.Stun/Silence from 1 ally > 2

Awakened Passive:
Non-Crit DMG FREE 70% > 80%
Remove Stun/S.Stun/Silence from 2 allies > 3

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Awaken Passive

When battle begins, summons 10 mosquitoes to assist in battle, each mosquito inherits Mosquito Girl’s 800% ATK as HP. Mosquitoes shares 80% all types of DMG (except Emblem DMG) with the entire team, reducing 80% DMG taken. Immune to [Separation].

Awakened 2:
Mosquito summons HP inherit ATK 800% > 1000%
Grants the entire enemy team 40% Detonation DMG Free, and 40% DoT DMG Free

Keepsake: If going for max DPS then yes.

Pros of UR Mosquito Girl

Strong DPS especially for single target

Also doubles as a support by removing Stun/Silence from allies, as well as share damage for the entire team, and cancelling of enemy’s Unyielding via Specialized Evolution

Another Monster side DPS (recently most of the DPS are hero side), so you can consider if your monster side is weak

Good substitute for Esper side (replaces KING) since KING is countered now by FF

Great for PVP, PVE and PVB

Cons of UR Mosquito Girl

Will be expensive to gear up to see maximum damage potential

Need to save BT for upcoming CE core and other units like DSK