- Envenom was part of an infamous combo with the version of Dagger Mastery in existence at the time, allowing players to one-shot the enemy hero.
- The artwork for this card came from the World of Warcraft Trading Card Game "Wrathgate" series, for the card Master Poisoner.
- Ben Brode on Twitter. (2014-10-07).
- Unknown alpha patch: Removed. Replaced by Blade Flurry.