Is Achilles Davenport legal in Standard, Modern, and Commander?

Achilles Davenport is legal in: Modern, Legacy, Vintage, Commander.

Achilles Davenport

Q: What type of card is Achilles Davenport?

Achilles Davenport is a Legendary Creature — Human Assassin. Its oracle text reads: "Freerunning {U}{B} (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.) Menace (This creature can't be blocked except by two or more creatures.) Other Assassins you control get +1/+1."