This is more of a suggestion, but I would like other users inputs as well.
I would love to see Frostfangs eyes glow with a slight particle effect and possibly move, as if it was looking around. When the weapon is drawn/unsheathed, make it so ice crystals form and melt away off the axe itself, maybe from his teeth and tongue also from the ice that forms on the players arm. Basically constant ice crystlas form and melt away while wielded. Even Ice shards floating around the character would make it so much more Legendary.
Right now it just seems underwhelming and un-Legendary when sheathed compared to other Legendarys. Anyone have thoughts or suggestions?
Edit: I just now noticed that the handle is actually the dragons body, make it move like it is breathing….