Is Break of Day legal in Standard, Modern, and Commander?

Break of Day is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Break of Day

Q: What type of card is Break of Day?

Break of Day is an Instant. Its oracle text reads: "Creatures you control get +1/+1 until end of turn. Fateful hour — If you have 5 or less life, those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)"

Instant

Creatures you control get +1/+1 until end of turn.

Fateful hour — If you have 5 or less life, those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Set Dark Ascension

Rarity Common

Mana Value 2

Artist Karl Kopinski

Collector # 3

Scryfall Gatherer