Disclaimer: I don't own FE and whatever

THE 10 COMMANDMENTS OF ULTIMATE WEAPON CREATING

Thou shalt name thine weapons with cool, powerful, and ancient sounding words like "Aureola" and "Garm." Of course, having a name to attract them crazy pyromaniacs out there helps too. That's where Forblaze comes into play.
Thou shalt make weapons specifically made for the main lords of the game, and they must be ridiculously huge and heavy if those lords are knight and blade lords.
Thou shalt make the Durandal a one-handed sword that is 5 feet long, 50kg, and shiny all over, and mainly used for stabbing if thou art a Knight Lord. Stabbity stab stab. NOT, I repeat, NOT, like a Wo Dao.
Thou shalt make sure to make thine weapons ridiculously powerful when giving them stat addition bonuses. Like Garm with its plus 5 speed. That's like giving a tortoise rocket powered roller blades.
Thou must make thine weapons have that little cool anime style blade gleam flash before its might is unleashed upon thine world.
Thou must create lots of sacred weapons, each with a farfetched backstory, and guarded by either a ridiculously overpowered idiot or completely incompetent lackey.
Thou shalt complete thine mission under a few days' time in order to be able to collect thine legendary heroes' weapons for no reason other than that the weapon somehow magically doesn't exist any longer if thou took a day longer to complete thine mission. Except, of course, the Sealed Sword.
Thou shalt make sure that said sword is so godly that it can totally molest everything in its path. Simply because it is that uber. Also make sure that said sword is made especially for pyromaniacs.
Thou shalt make thine weapons 'holy', or somehow have non-human contact recognition system that makes them kill non-human stuff harder.
Thou shalt always make an unbelievably powerful healing staff that heals everything on the field, but with very low durability. And don't forget its bashing potential; Natasha and Latona can take out everything if she just used it to whack everything.
Hmm...I gotta admit, this one wasn't that good; didn't have much inspiration.

R&R!