Is Unassuming Sage legal in Standard, Modern, and Commander?

Unassuming Sage is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Unassuming Sage

Q: What type of card is Unassuming Sage?

Unassuming Sage is a Creature — Human Peasant Wizard. Its oracle text reads: "When this creature enters, you may pay {2}. If you do, create a Sorcerer Role token attached to it. (Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.") *"The archmage Valya? Why yes, I do believe I've heard of her."* Power/Toughness: 2/2"

Creature — Human Peasant Wizard

When this creature enters, you may pay . If you do, create a Sorcerer Role token attached to it. (Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.")