# Mordant Blade

* **Rarity:** rare
* **Type:** Weapon
* **Attunement:** Yes
* **Source:** Vault of Magic


You can use a bonus action to speak this magic weapon's command word, causing the blade to weep a caustic, green acid. While weeping acid, the weapon deals an extra 2d6 acid damage to any target it hits. The weapon continues to weep acid until you use a bonus action to speak the command word again or you sheathe or drop the weapon.