Is Promise of Tomorrow legal in Standard, Modern, and Commander?

Promise of Tomorrow is legal in: Legacy, Vintage, Commander.

Promise of Tomorrow

Q: What type of card is Promise of Tomorrow?

Promise of Tomorrow is an Enchantment. Its oracle text reads: "Whenever a creature you control dies, exile it. At the beginning of each end step, if you control no creatures, sacrifice this enchantment and return all cards exiled with it to the battlefield under your control. *Death can wait.*"

Enchantment

Whenever a creature you control dies, exile it.

At the beginning of each end step, if you control no creatures, sacrifice this enchantment and return all cards exiled with it to the battlefield under your control.

*Death can wait.*

Set Commander Legends

Rarity Rare

Mana Value 3

Artist Seb McKinnon

Collector # 39

Scryfall