You deal 125% weapon damage, refreshing the current Sting on your target and triggering an effect:
Serpent Sting - Instantly deals 40% of the damage done by your Serpent Sting.
Viper Sting - Instantly restores mana to you equal to 60% of the total amount drained by your Viper Sting.
Scorpid Sting - Attempts to Disarm the target for 10 sec. This effect cannot occur more than once per 1 minute.