Is Pearlspear Courier legal in Standard, Modern, and Commander?

Pearlspear Courier is legal in: Legacy, Vintage, Commander.

What type of card is Pearlspear Courier?

Pearlspear Courier is a Creature — Human Soldier. Its oracle text reads: "You may choose not to untap this creature during your untap step. {2}{W}, {T}: Target Soldier creature gets +2/+2 and has vigilance for as long as this creature remains tapped. Power/Toughness: 2/1"