|Thanks to Palla's default access to both Ruby Sword+ and Moonbow, she makes for a surprisingly effective Enemy Phase anti-axe unit, even with minimal investment. Coupled with Fury, Palla's stats go from seemingly average to fairly good, taking zero damage from common axe units such as Hector or Cherche. She also serves as a good Green Tome tank as a result of Ruby Sword. However, Ruby Sword unfortunately means that Palla is not going to do anything against blue units and as such, Lance wielders, Blue Manaketes and Blue Tome users should be avoided at all cost.
Ruby Sword+ is the obvious choice for this build, amplifying the weapon triangle and as such, allowing Palla to stop easily wall Axe units. It is also Palla's default weapon which means it requires no additional resources
For the assist, any one of Reposition, Swap or Draw Back works, and is up to the player's preference or availability
Moonbow is Palla's default special and works well with her playstyle of baiting a green unit and then either using it during the duel with said axe unit if she doubles the enemy, or having it ready to fire for the next duel she engages. With Moonbow ready, Palla can secure KO's on frailer units like Sanaki or Lucina when she initiates with it
Fury 3 is the preferred A skill, as it makes Palla surprisingly tanky when coupled with the effect of Ruby Sword. If Fury is not available, Attack +3 can be run as a substitute to help Palla win against the green axe units she otherwise wouldn't be able to finish off. However, if Palla doesn't have a +spd boon, Speed +3 is the preferred A slot of choice as this ensures Camilla (Spring Festival) and Cecilia with Gronnblade+ will almost never double Palla.
For the B slot, Swordbreaker 3 is the preferred option and it allows Palla to combat other swords more easily. It allows KO's on units such as Vantage Lucina or Vantage Ryoma. It also prevents enemy Sword units that commonly carry Swordbreaker but can't naturally double Palla, such as Eirika, from activitating Swordbreaker and doubling Palla. Alternatively, Palla can keep her own b-skill: Wings of Mercy 3, allowing her to teleport to units below 50% hp, and either attempt to finish off an enemy unit or bring the damaged unit to safety by using an assist skill.
For the C slot, Palla can keep Goad Fliers when used in a Flier team, or inherit a Hone, Fortify or Spur skill based on the player's preference.