Is Kestia, the Cultivator legal in Standard, Modern, and Commander?

Kestia, the Cultivator is legal in: Legacy, Vintage, Commander.

Kestia, the Cultivator

Q: What type of card is Kestia, the Cultivator?

Kestia, the Cultivator is a Legendary Enchantment Creature — Nymph. Its oracle text reads: "Bestow {3}{G}{W}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Enchanted creature gets +4/+4. Whenever an enchanted creature or enchantment creature you control attacks, draw a card. Power/Toughness: 4/4"

Legendary Enchantment Creature — Nymph

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)