Is Bomat Courier legal in Standard, Modern, and Commander?

Bomat Courier is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Bomat Courier

Q: What type of card is Bomat Courier?

Bomat Courier is an Artifact Creature — Construct. Its oracle text reads: "Haste Whenever this creature attacks, exile the top card of your library face down. (You can't look at it.) {R}, Discard your hand, Sacrifice this creature: Put all cards exiled with this creature into their owners' hands."