Is Cecily, Haunted Mage legal in Standard, Modern, and Commander?

Cecily, Haunted Mage is legal in: Legacy, Vintage, Commander.

Cecily, Haunted Mage

Q: What type of card is Cecily, Haunted Mage?

Cecily, Haunted Mage is a Legendary Creature — Human Wizard. Its oracle text reads: "Your maximum hand size is eleven. Whenever Cecily, Haunted Mage attacks, you draw a card and you lose 1 life. Then if you have eleven or more cards in your hand, you may cast an instant or sorcery spell from your hand without paying its mana cost. Partner—Friends forever (You can have two commanders if both have this ability.)"

Legendary Creature — Human Wizard

Your maximum hand size is eleven.

Whenever Cecily, Haunted Mage attacks, you draw a card and you lose 1 life. Then if you have eleven or more cards in your hand, you may cast an instant or sorcery spell from your hand without paying its mana cost.

Partner—Friends forever (You can have two commanders if both have this ability.)

Set Universes Within

Rarity Rare

Mana Value 4

Artist Anastasia Balakchina

Collector # 3

Scryfall