Is Constant Mists legal in Standard, Modern, and Commander?

Constant Mists is legal in: Legacy, Vintage, Commander.

Constant Mists

Q: What type of card is Constant Mists?

Constant Mists is an Instant. Its oracle text reads: "Buyback—Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.) Prevent all combat damage that would be dealt this turn."

Instant

Buyback—Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)

Prevent all combat damage that would be dealt this turn.

Set Stronghold

Rarity Uncommon

Mana Value 2

Artist Dermot Power

Collector # 104

Scryfall Gatherer