Arcana: Fortune Mate
Fire 
Shotgun 
Attacker 
Burst 2 
Elysion Tier 2 Keepsake Album
■ Activates when Full Burst ends. Affects all shotgun-wielding allies.
ATK ▲ 13% of the caster's ATK x stack count of Precious Moments for 15 sec.
■ Activates when Happy Memories takes effect. Affects self.
Snapshots of Youth: Normal Attack Damage Multiplier ▲ 10% continuously, stacks up to 3 time(s).
■ Activates when Full Burst ends. Affects self.
Removes Making Memories.
Removes Snapshots of Youth.
Memories and Moments
■ Activates when performing normal attacks while in Making Memories status. Affects self.
Effect changes according to the number of attacks. The effect of each phase does not stack. Resets when Making Memories is removed.
Two times: Reloads 6 round(s).
Four times: Happy Memories: Number of pellets ▲ 1 continuously, stacks up to 3 time(s).
Six times: Precious Moments: ATK ▲ 2.49% continuously, stacks up to 3 time(s).
■ Activates when using Burst Skill. Affects all shotgun-wielding allies (except self).
Attack Damage ▲ 55% for 10 sec.
Radiant Youth
■ Affects self.
Making Memories:
Function: Enhances attack capabilities.
Effect 1: Critical Rate ▲ 20.09% continuously.
Effect 2: Reloads 2 round(s).
Effect 3: Attack Damage ▲ 29.99% continuously.
■ Affects all enemies.
Deals 554.4% of final ATK as Burst Skill damage.
Skill recommendations
Build
CUBES
Bastion + one line of max ammo means never reloading. If Bastion is full, you can always run the safe pick Resilience.
OL GEAR
Elemental DMG and ATK are the only things you really care about. One line of max ammo capacity so you never have to reload. Rest of the lines can be crit related or hit rate to increase her damage output.
Solo Raid Usage
This character has not been used in recent Solo Raids, or usage data is not available yet.
Pros & Cons
- Makes all of your SG units hit harder without any exceptions thanks to her ATK and Attack Damage buffs
- A "staple" SG buffer means allowing other B2 buffers to be used on different compositions while not lowering the damage of SG girls
- Plug and play NIKKE. As long as she is bursting (and shooting) she will automatically proc all of her kit
- Cheap to build character if you only plan to use her as a support. You can throw more resources at her to also be a DPS if you want
- At the time of her release the best shotgun is Dorothy: Serendipity and she still benefits more from pierce buffers rather than using Arcana. This is just nitpicking, since it simply means having more team compositions available for shotgun teams
Extra notes
Only level up her burst if you are going to use her as a DPS instead of a pure shotgun buffer. If you didn't get good OL gear, you can keep it at 4 until you reroll her or get more resources to fully invest.