Is Curse of Echoes legal in Standard, Modern, and Commander?

Curse of Echoes is legal in: Modern, Legacy, Vintage, Commander.

Curse of Echoes

Q: What type of card is Curse of Echoes?

Curse of Echoes is an Enchantment — Aura Curse. Its oracle text reads: "Enchant player Whenever enchanted player casts an instant or sorcery spell, each other player may copy that spell and may choose new targets for the copy they control."

Enchantment — Aura Curse

Enchant player

Whenever enchanted player casts an instant or sorcery spell, each other player may copy that spell and may choose new targets for the copy they control.

Set Dark Ascension

Rarity Rare

Mana Value 5

Artist Slawomir Maniak

Collector # 34

Scryfall Gatherer