Is Dreadmalkin legal in Standard, Modern, and Commander?

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

Dreadmalkin

Q: What type of card is Dreadmalkin?

Dreadmalkin is a Creature — Zombie Cat. Its oracle text reads: "Menace (This creature can't be blocked except by two or more creatures.) {2}{B}, Sacrifice another creature or planeswalker: Put two +1/+1 counters on this creature. *The feline Eternal felt Liliana's command, looked at her disdainfully, flicked its paw, and scampered away across the rooftops.* Power/Toughness: 1/1"