weapons that don't get used often from a gotcha or creation

I got thinking after reading more stories there's always a gotcha system with gamers there's one thing that gets used a lot is Excalibur not a lot of other swords can use or any weapons for example I read one story that they recreated Thor's hammer and ax but never actually got them so far there's a couple swords I'm surprised it's never been used the master sword from Zelda or the sword Omens from ThunderCats Blades of Chaos from God of War