Is Planar Collapse legal in Standard, Modern, and Commander?

Planar Collapse is legal in: Legacy, Vintage, Commander.

Planar Collapse

Q: What type of card is Planar Collapse?

Planar Collapse is an Enchantment. Its oracle text reads: "At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice this enchantment and destroy all creatures. They can't be regenerated."

Enchantment

At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice this enchantment and destroy all creatures. They can't be regenerated.

Set Urza's Legacy

Rarity Rare

Mana Value 2

Artist Mark Zug

Collector # 18

Scryfall Gatherer