Is Syr Elenora, the Discerning legal in Standard, Modern, and Commander?

Syr Elenora, the Discerning is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Syr Elenora, the Discerning

Q: What type of card is Syr Elenora, the Discerning?

Syr Elenora, the Discerning is a Legendary Creature — Human Knight. Its oracle text reads: "Syr Elenora's power is equal to the number of cards in your hand. When Syr Elenora enters, draw a card. Spells your opponents cast that target Syr Elenora cost {2} more to cast."