Is Combat Thresher legal in Standard, Modern, and Commander?

Combat Thresher is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Combat Thresher

Q: What type of card is Combat Thresher?

Combat Thresher is an Artifact Creature — Construct. Its oracle text reads: "Prototype {2}{W} — 1/1 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Double strike When this creature enters, draw a card. Power/Toughness: 3/3"