Is Revel Ruiner legal in Standard, Modern, and Commander?

Revel Ruiner is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper.

Revel Ruiner

Q: What type of card is Revel Ruiner?

Revel Ruiner is a Creature — Octopus Rogue. Its oracle text reads: "Menace (This creature can't be blocked except by two or more creatures.) When this creature enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)"