Petrine

Weapon: Flame Lance

Assist: Positional Assist / No Assist / Flexible

Special: Moonbow / Luna 

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

Passive B: Lull Spd/Res / Lull Atk/Spd / Lunge 

Passive C: Panic Smoke / Def Smoke / Spd Smoke / Cavalry Buffs / Flexible

Sacred Seal: Swift Sparrow / Death Blow / Sturdy Blow / Darting Blow 

• Petrine excels at offensive play thanks to her fantastic statline and sheer damage potential of her Flame Lance, and this build aims to capitalize on this exactly. An Asset to either of Petrine’s offensive stats will work perfectly here, with +SPD being a bit better given how much faster units are becoming though this ultimately up to player preference. 
• Although Petrine’s choice of Assist is largely inconsequential and boils down to a matter of personal preference for normal sets, her Assist slot is of much more importance if planning to use her in an Aether Raids Defense team because one must account for the order in which the AI prioritizes turn order -- and to avoid any potential mishaps, one can choose to not equip an Assist at all. 
• Most standard offensive A slots will work her to further enhance Petrine’s combat prowess, with Atk/Spd Push 4 being among one of her best options while also being economical due to her innate access to Atk/Spd Push 3. However, should one dislike its recoil damage since it could potentially put her below Flame Lance’s HP threshold, Atk/Spd Solo and Swift Sparrow are strong alternatives.  
  • It should be noted, though, that if using her in an Aether Raids Defense team, Atk/Spd Push remains her best choice despite its recoil damage as it has functionality in both phases and is active regardless of positioning unlike her other options. 
• Lull Spd/Res is a fantastic choice of B slot skill to build upon the in-combat debuffs Petrine can apply via Flame Lance, while also nullifying any Speed or Resistance buffs her enemy may possess. Alternatively, Lull Atk/Spd can be taken to supplement her survivability instead of focus purely on her damage output. Lunge is an interesting choice as well for Defense team purposes to expose enemy units to the rest of her team.
• Smoke skills are especially great choices when paired with refresher support, allowing her to debilitate opposing forces to more easily sweep through opposing forces; Panic Smoke is especially powerful in a Defense team to reverse enemy buffs, but Def Smoke and Spd Smoke are good generalist choices as well. If using Petrine alongside other cavalry units, class-exclusive buffs are solid options. 
• Lastly, any seal that enhances her offensive stats are ideal; her best options include Swift Sparrow, Death Blow, and Darting Blow. 

Weapon: Flame Lance / It’s Curtains…+ (+SPD)

Assist: Reposition / Flexible

Special: Galeforce

Passive A: Heavy Blade 4 / Atk/Spd Push 4 / Swift Sparrow / Atk/Spd Solo 

Passive B: Wings of Mercy / Lull Atk/Spd / Hit and Run / Drag Back 

Passive C: Def Smoke / Spd Smoke / Joint Drive Spd / Savage Blow / Flexible

Sacred Seal: Quickened Pulse / Heavy Blade

• Although this build retains a similar offensive focus, it focuses more on maximizing Petrine’s mobility through the use of the Galeforce Special. That being said, a +ATK or +SPD IV will once again be her preferred options here since her intended playstyle does remain offensive in nature. 
• The centerpiece of this set lies in Petrine’s choice of Special: Galeforce. Combined with her extended mobility, its ability to provide an additional action grants her a strong amount of flexibility in the Player Phase and allows for approaches normally not possible; this can be crucial for the success of certain strategies, such as Galeforce-centered compositions for Aether Raids Offense. 
• That being said it does come with a significant caveat in the form of its massive five-turn cooldown, making it a requirement for Petrine to equip Heavy Blade in order to activate it consistently. One has the option of using Heavy Blade 4 in her A slot to combine it with Quickened Pulse -- with her PRF, this allows her to activate it in her first combat provided she performs a follow-up attack, or one can use It’s Curtains… to further reduce its cooldown for maximum effectiveness in Aether Raids Offense. 
• Alternatively, if Heavy Blade is equipped in her seal slot, this allows Petrine to obtain much stronger offensive boosts by allowing her to equip standard offensive A slots like Atk/Spd Push; however, this results in making Petrine much more selective in choosing her initial matchup since her opponent must then be able to counterattack in order for Galeforce to fully activate. 
• Wings of Mercy is a fantastic B slot skill to further build upon Petrine’s mobility through the ability to teleport next to a weakened ally, allowing her to strike opposing foes from far more favorable positions than normally possible. A movement based skill like Hit and Run works similarly for a safer approach. For a more combat-oriented option, Lull Atk/Spd helps strengthen her ability to wield Heavy Blade while also boosting her doubling potential. 
• Smoke skills pair quite well with Galeforce-centered strategies to improve the quality of Petrine’s subsequent matchups, though Savage Blow is an interesting option that works similarly but helps shut down Guard instead. Joint Drive skills are also worthwhile considerations to mutually buff herself and nearby allies in Galeforce chains. Ultimately, though, her C slot is flexible and can be left up to personal preference.