-atk +res B!ninian

0 damage is real. I don't have her, but 25 base Atk is kinda like Arden's Spd stat...

I'd like to know as well, as I have the same IVs. I'd consider Blarblade+ if you have flier buffs, or keep the starting weapon otherwise. For a special I'm thinking Iceberg, as (for me) the main threat to my Flier teams are red swords, who typically have low res. The damage from moonbow vs a 25 res character (rough estimate of 5* unmerged swords) is 7 extra, vs 12 from luna or 15 from +res iceberg.

I gave her a Blade tome and put her on a flyer emblem team with S!Corrin, H!Nowi, and Easter Camilla. All sporting Blade tomes +