Possibly not. But it isn't only a weapon that can't be knocked out of your hand, it's a weapon that people won't even know you have until you deploy it, and one that you're never going to be caught without because you'd set it aside during a period of apparent safety. Those are properties that might well make a weapon worthy of requiring attunement.
D&D 5E - Why do Armblades need Attunement?
|
