Is Aether Poisoner legal in Standard, Modern, and Commander?

Aether Poisoner is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Aether Poisoner

Q: What type of card is Aether Poisoner?

Aether Poisoner is a Creature — Human Artificer. Its oracle text reads: "Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, you get {E}{E} (two energy counters). Whenever this creature attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token."