Anna

Weapon: Deck Swabber(+Spd/+Atk) / Slaying Hammer(+Spd/+Atk)

Assist: Rally Atk/Spd+ / Positional Assist

Special: Galeforce / Aether / Moonbow

Passive A: Swift Sparrow 3 / Atk/Spd Solo 4

Passive B: Null Follow-Up / Wings of Mercy

Passive C: Joint Drive Atk / Preference

Sacred Seal: Flashing Blade / Swift Sparrow

• Due to her inability to acquire merges and lackluster stats all around outside of Speed, Anna’s main niche is as a rotating bonus unit.
• The Deck Swabber is one of Anna’s best options, granting her some much needed damage output and survivability by debuffing the foe’s Attack and Defense by 5 in addition to negating their Attack and Defense buffs, provided she isn’t adjacent to an ally. She can also utilize a Slaying Hammer to gain effective damage against the plethora of Armors that frequent Arena, although in Aether Raids the Deck Swabber is more useful overall.
• For scoring as well as possible, high SP skills such as Galeforce, Aether, Rally Atk/Spd+, and Joint Drive Atk are ideal. Galeforce is also a solid special for Anna overall, although ally assistance in the form of Infantry Pulse can help make her Galeforces more consistent. Joint Drive Atk is also helpful in general, as it gives her a much needed boost to her damage output while also buffing her allies. 
• Offensive A slot skills such as Swift Sparrow 3 and Atk/Spd Solo 4 give her some much needed attacking power and extra Speed to secure follow-up attacks with.
• For Anna’s B slot, Null Follow-up is a standout option, as it handily counters all forms of follow-up negation, such as Brave Hector’s refined Maltet, in addition to stopping the foe’s guaranteed follow-up attacks. Wings of Mercy can also be used to give Anna some extra mobility.
• Finally, Flashing Blade and Swift Sparrow allow Anna to activate her Specials more quickly if she outspeeds the foe, or simply give her another offensive boost when attacking, respectively.

Weapon: Deck Swabber(+Spd/+Res)

Assist: Positional Assist

Special: Luna / Aether

Passive A: Distant Counter

Passive B: Null C-Disrupt / Null Follow-Up / Spurn

Passive C: Joint Drive Atk / Preference

Sacred Seal: Atk/Def Solo / Mirror Stance / Spd/Res Solo

• Anna can also utilize an Enemy Phase build to some success due to the strength of inheritable axes such as the Deck Swabber.
• Luna allows Anna to reduce her foe’s defense by 50% when it triggers, giving her a much easier time breaking through bulky opponents. Aether remains ideal for scoring, however.
• Distant Counter scores highly and also gives Anna the ability to counterattack at range, letting her counterattack and KO frail ranged units.
• Null C-Disrupt gives Anna the ability to nullify counterattack prevention skills such as Firesweep and Dazzling Staff, although Anna can still make good use of other B slots such as Null Follow-Up and Spurn(due to her high Speed).
• Joint Drive Atk gives Anna a much needed Attack boost when within two spaces of an Ally, as well as granting an Attack boost to allies within 2 spaces during combat.
• Finally, Sacred Seals such as Mirror Stance and Atk/Def Solo are good options for her due to the additional stats they provide.