Is Benalish Honor Guard legal in Standard, Modern, and Commander?

Benalish Honor Guard is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Benalish Honor Guard

Q: What type of card is Benalish Honor Guard?

Benalish Honor Guard is a Creature — Human Knight. Its oracle text reads: "This creature gets +1/+0 for each legendary creature you control. *"The true measure of all heroes is not what they achieve, but who they inspire." —*Triumph of Gerrard** Power/Toughness: 2/2"