Which one-handed weapon thematically fits best for a dragon communion build?

I am asking thematically/aesthetically. I will use a couple of dragon communion incantations in my offhand but now I need a weapon to pair them with, since I don't want to be a full caster! I like having a weapon and spells at the same time, so I prefer to stay one-handed. Weapon does not have to be optimal or even strong.

I will probably wear the dragon knight armor but if there is a bettter one let me know, too!

Looking forward to your ideas!