Is Witch Engine legal in Standard, Modern, and Commander?

Witch Engine is legal in: Legacy, Vintage, Commander.

What type of card is Witch Engine?

Witch Engine is a Creature — Horror. Its oracle text reads: "Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) {T}: Add {B}{B}{B}{B}. Target opponent gains control of this creature. (Activate only as an instant.) Power/Toughness: 4/4"