Special-Moonbow, Aether
Assist-Reposition, Draw Back, Swap
A Skills-Fury, Life and Death, Swift Sparrow, Steady/Warding Breath, Brazen Atk/Spd, Close/Distant Counter
B Skills-Quick Riposte, Vantage, Desperation, Wrath, Bold/Vengeful Fighter, Chill skills
C Skills-Tactic skills, Atk Smoke, Spd Smoke, Odd/Even Wave skills, Emblem buffs
This is just my opinion, feel free to comment your thoughts
A slot: Bond skills are very good if you play active
B slot: Guard is on par with QR, Wary Fighter is also very powerful for tanks
C slot: The best skill for that slot is Panic Ploy for everyone who can run it. Ploys(notably Spd and Def Ploy) are also very powerfull and should be chosen if the unit has high Res.
I put Bold/Vengeful Fighter over Wary Fighter just because it gives armored units an additional attack as opposed to taking away follow ups for both parties
I originally had ploys for C but I removed it because most of them require units to have pretty high RES and Panic Ploy only works on units that have field buffs.
Yeah, Wary Fighter is definitely worse than the other Fighters, however Vantage is only good on a handfull of units as well.
For Panic Ploy, I would never go to Arena without it, it cripples so many units. Bladetomes, Horse Emblem, Tactic Emblem are all free wins thanks to that one skill.
Top tier skills are really dependent on the unit itself.
You can't just slap those skills on a unit for it to be good.
I have a Legendary Ephraim (+Atk, -HP) that I run Heavy Blade on and I can say Moonbow sucks for him, Luna is insanely better for him.
I personally find Fury to be very overrated (Works best on units that self heal/ have Reprisal/Vengeance, or a range regardless counter weapon), other than that you're just giving your opponent free damage.
I will say the Brazen skills are definitely Top Tier, especially DEF/RES and ATK/SPD ones.
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