Is Demon Wall legal in Standard, Modern, and Commander?

Demon Wall is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Demon Wall

Q: What type of card is Demon Wall?

Demon Wall is an Artifact Creature — Demon Wall. Its oracle text reads: "Defender Menace (This creature can't be blocked except by two or more creatures.) As long as this creature has a counter on it, it can attack as though it didn't have defender. {5}{B}: Put two +1/+1 counters on this creature. Power/Toughness: 3/3"