Caellach

Weapon: Brave Axe+ / Ninja Masakari+

Assist: Reposition

Special: Moonbow / Glimmer

Passive A: Sturdy Impact / Death Blow / Swift Sparrow

Passive B: Lull Atk/Def / Special Spiral / Hit and Run

Passive C:  Even Atk Wave / Def Smoke

Sacred Seal: Death Blow

• This set is straightforward and brutal: stack Attack as high as you can and simply delete your opponent in Player Phase.
• With the new Ninja weapons and the f2p availability of Ninja Masakari, it could be a F2P inheritance option if you don't have the feathers for a Brave Axe, but it's likely better suited on Ninja Hana anyway. If Ninja Masakari was inherited to Caellach, it opens the option for him to try and build up his Speed via Speed-stacking skills such as Life and Death or Swift Sparrow. Note that this isn't highly recommended, but it is an option.
• Sturdy Impact is all-around better in his A slot than Death Blow due to its followup denial. Since Caellach's Speed is fairly low, he relies on his high Attack to oneshot his opponent - if he cannot do this, then he needs to prevent them from doubling him.
• Lull Atk/Def and Special Spiral are both premium options for Caellach and increase his offensive power. On a budget, however, he can take Hit and Run, which gives him some protection after he's attacked.

Weapon: Deck Swabber+ (+DEF)

Assist: Reposition

Special: Moonbow / Glimmer

Passive A: Distant Counter / Bracing Stance

Passive B: Quick Riposte

Passive C:  Pulse Smoke

Sacred Seal: Atk/Def Solo

• This is a very tanky set that plays to Caellach's strengths - his mixed bulk and high Attack - while mitigating his weaknesses. By utilizing the Deck Swabber, Caellach can reduce his opponent's Attack and strip their Attack buffs, which helps him to stay protected. He also reduces their Defense, allowing him to do more damage.
• Distant Counter plays well to his mixed bulk and allows him to retaliate vs both archers and mages. Bracing Stance is another option which limits him to melee, but increases his tankiness significantly at that range.
• Atk/Def Solo in his seal slot synergizes nicely with Deck Swabber, as both skills require Caellach to be all alone. This helps him to further endure enemy hits while dishing out some heavy damage on his own.