User blog comment:InvictusKris/Deck Blog: Springfest 2016 Deck Idea: Armorknights Art of Demon Slay!!!/@comment-26392338-20160321183320/@comment-26392338-20160321192012

Ancient, Legend & Katana  probably have the easiest time of removing weapons. Magic has its fair share too, mostly in bouncing, but it does have Asmodai Cena for straight up destruction. As far as more specific examples go, Demongodol Ark can pop a weapon by discarding a card, and Brave Machines have this. Oh, and black dragons have access to the fifty abygale impacts, and at least two of them can pop items.

Of this little lot, black dragons are probably the biggest threat; not because their removal is necessarily the most potent, but because a lot of people're probably going to be running them. Hype is a hell of a thing :V

(if i'm missing any examples of easy item removal others should feel free to fill in the blanks)