Armor of Silence (5e Equipment)
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Armor (light, medium, or heavy), uncommon (requires attunement)
While wearing this armor you make no sound, regardless of what you are holding, the surface you are moving across, or how loud you shout.
Curse. This armor is cursed, a fact that is revealed only when an identify spell is cast on the armor, or you attune to it. Attuning to the armor curses you until you are targeted by a remove curse spell or similar magic; removing the armor fails to end the curse. While cursed, you are deafened from anything further than 10 feet away from you.