Is Alexi, Zephyr Mage legal in Standard, Modern, and Commander?

Alexi, Zephyr Mage is legal in: Legacy, Vintage, Commander.

Alexi, Zephyr Mage

Q: What type of card is Alexi, Zephyr Mage?

Alexi, Zephyr Mage is a Legendary Creature — Human Spellshaper. Its oracle text reads: "{X}{U}, {T}, Discard two cards: Return X target creatures to their owners' hands. *The Keldons didn't know her name, but they still cursed her in battle.* Power/Toughness: 3/3"