Asp-Tooth Signet

Visuals: A gold ring shaped like a coiled desert viper, its fangs wrapping around the wearer's knuckle.

Combat Effect: When a creature within 5 feet of you hits you with a melee attack, you can use your reaction to cause spectral venom to spray from the ring. The attacker must succeed on a DC 12 Constitution saving throw or take 1d6 poison damage and have its speed reduced by 10 feet until the start of its next turn

Notes: The venom of the Asp is deadly only one who commands the effect can wield this