Hidden Weapon makes the player's right-hand weapon invisible for a short time. The sorcery is classified as a weapon augmentation; Hidden Weapon can thus only be used on enchantable weapons, and cannot be used simultaneously with other augmentations. Sheaths and scabbards will not be affected by the sorcery.
Hidden Weapon is primarily used in online PvP and is virtually useless against NPCs and enemies. It is surprisingly useful against invaders or hosts, as it makes it much harder for the opponent to predict, block, dodge, or parry attacks.