Karla

Weapon: Vassal's Blade (+Eff)

Assist: Positional Assist

Special: Sol / Luna / Noontime / Moonbow

A Passive: Distant Counter

B Passive: Spurn

C Passive: Pulse Smoke / Time’s Pulse

Sacred Seal: Atk/Spd Solo / Spd/Res Solo / Mystic Boost

• Vassal’s Blade’s ability to not only act as a conditional Null Follow-Up weapon, but also grant additional Atk and Spd means Karla can make for a fantastic Spurn tank, since not only does she gain more Spd from her weapon, but also has the ability to run both Null Follow-Up and Damage Reduction in her kit, effectively reducing the amount of damage she takes. Starting at a base of 40 Spd, Vassal’s Blade only further increases the potency of Damage Reduction skills thanks to the 10 potential Spd it can grant.
   
• Due to the Slaying effect in Vassal’s Blade, Karla is able to run a variety of 2 CD and 3 CD Specials of her choice. For Aether Raids, some of the most common choices end up being healing Specials such as Sol or Noontime. However, if you want to run damaging Specials, you can go with Luna or Moonbow. Depending on the support of your choice, you might be able to run a 3 CD Special.
   
• Distant Counter is fairly standard by this point. Since a good majority of Aether Raids Defense teams are made up of ranged units, she’ll want to have the ability to counter them during the Enemy Phase, especially if she’s being run as a Spurn tank.
   
• Spurn is going to be the best option of the three Damage Reduction skills as it can grant additional True Damage if the threshold is met. This means Karla can easily get upwards of 15 points of True Damage per hit as Vassal’s Blade grants a good percentage of True Damage based on her Spd. That being said, you can’t go wrong with any of the three options.
   
• Depending on the support units at hand, Karla can either run Pulse Smoke or Time’s Pulse. Pulse Smoke allows Karla to shut down instant Specials and Area-of-Effects, even if the latter doesn’t dent her as much. Time’s Pulse as Karla’s C Passive is to help synergize with 3 CD Specials. The Slaying in Vassal’s Blade means she can retaliate with a 3 CD Special with Time’s Pulse, as long as there aren't any Guard effects present.
   
• The Sacred Seal is flexible depending on what stats you want to prioritize. Atk/Spd Solo can help with her damage output, but if you feel that it’s already high enough, you can give her Spd/Res Solo instead to help deal with mages that continue to fester Aether Raids. Likewise, if you want to run a damaging Special, you can run Mystic Boost as her Sacred Seal, but as a result, she won’t heal nearly as much.

Weapon: Vassal's Blade (+Eff)

Assist: Positional Assist

Special: Galeforce

A Passive: Flashing Blade (3 or 4) / Fury (3 or 4) / Heavy Blade (3 or 4)

B Passive: Wings of Mercy / Windsweep

C Passive: Time’s Pulse / Def Smoke

Sacred Seal: Quickened Pulse / Atk/Spd Solo / Atk/Spd Bond / Flashing Blade / Heavy Blade

• The innate Slaying and Null Follow-Up in Vassal’s Blade means there’s not much stopping her from running a competent Galeforce set beyond Guard skills. And even then, given that Guard skills are rare, you’ll find that in most cases Karla will be able to get her Galeforce off with relative ease. This is especially true if you run skills that accelerate her cooldown such as Quickened Pulse and Flashing Blade.
   
• Karla’s high Spd stat, combined with Vassal Blade’s True Damage, means she’d make perfect use of Flashing Blade 4. Flashing Blade 4 being able to grant an additional five True Damage means that her damage output can still be relatively high, even without a damaging Special. For budget purposes, you can also run Fury as that can make Flashing Blade checks easier and Heavy Blade checks more obtainable.
   
• Karla having innate Null Follow-Up means she can run Windsweep without the follow-up negation penalty. This, on top of the additional 10 Spd she can gain from her weapon, means most melee units are going to struggle to beat the Windsweep effect. Likewise, if you want to run her in Aether Raids, you can run her with Wings of Mercy and act as part of a chain in a Galeforce comp.
   
• Karla’s C Passive is relatively flexible for the most part. If you want to lower her cooldown as much as possible to make Galeforce easier to trigger, you can give her Time’s Pulse. Time’s Pulse, combined with Quickened Pulse as her Sacred Seal, puts Galeforce at 2 CD, and so long as there aren’t any Guard effects and she can make her Flashing/Heavy Blade check, which shouldn’t be an issue whatsoever, she’ll be able to trigger Galeforce on the first hit. However, if Time’s Pulse is out of the budget, she can run Def Smoke, so her next combat allows her to deal with foes more easily.
   
• The Sacred Seal of choice will completely depend on what Karla is already running in her kit. Flashing Blade and Heavy Blade are going to be the most desired choices if she isn’t running those skills as her A Passive. If she is, then you can either increase her damage output with Atk/Spd Bond or Atk/Spd Solo depending on her B Passive. Finally, if she’s running Time’s Pulse as her C Passive, she can run Quickened Pulse to accelerate her Galeforce even more.

Weapon: Vassal's Blade (+Eff)

Assist: Positional Assist

Special: Luna / Moonbow / Glimmer / Galeforce

A Passive: Flashing Blade (3 or 4) / Fury (3 or 4) / Swift Sparrow / Atk/Spd Push / Heavy Blade (3 or 4)

B Passive: Desperation / Close Call / Hit and Run

C Passive: Def Smoke / Odd Tempest / Time’s Pulse / Even Tempest

Sacred Seal: Atk/Spd Solo / Flashing Blade / Heavy Blade

• There are a lot of Specials at her disposal that she can make great use of. If she wants to prioritize damage output, she can run all sorts of damaging Specials such as Luna, Moonbow, and Glimmer. Likewise, because her weapon has innate Slaying, she can run Galeforce. It’s rather flexible at the end of the day, so it’ll all come down to preference.
   
• There are a lot of skills you can give Karla depending on what you have available. Anything that raises Atk and Spd should realistically be fine in the grand scheme of things. However, Swift Sparrow and Atk/Spd Push are some of the best options available to her. Likewise, you can give her Flashing Blade or Heavy Blade for the CD acceleration.
   
• Her B Passive is going to be the determinant for what Karla runs in the rest of her kit. Desperation as her B Passive means she can run a variety of damaging Specials such as Luna and Moonbow. Running Desperation means she can also reliably run Flashing Blade and Heavy Blade, either as her Sacred Seal or A Passive, and run 3 CD Specials or even Galeforce. However, I would recommend the latter with Hit and Run or Close Call with Odd Tempest or Even Tempest as she can enter combat and leave the enemy range afterward.
   
• Because Karla is an Infantry unit, she is able to access the Tempest line of skills. This can be nice for Hit and Run strategies with skills such as Galeforce and Close Call or Hit and Run. The reason Close Call is an option over the other Damage Reduction skills is because of the movement that applies after combat, and since Karla has a fantastic Spd stat, she can live more combat and avoid enemy phase damage if her Galeforce triggers.
   
• Karla’s Sacred Seal can be interchanged depending on what the rest of her kit entails. If she’s running Flashing Blade or Heavy Blade as her A Passive, she can run Atk/Spd Solo and vice versa if the opposite applies.