Is Sacred Boon legal in Standard, Modern, and Commander?

Sacred Boon is legal in: Legacy, Vintage, Commander.

Sacred Boon

Q: What type of card is Sacred Boon?

Sacred Boon is an Instant. Its oracle text reads: "Prevent the next 3 damage that would be dealt to target creature this turn. At the beginning of the next end step, put a +0/+1 counter on that creature for each 1 damage prevented this way."

Instant

Prevent the next 3 damage that would be dealt to target creature this turn. At the beginning of the next end step, put a +0/+1 counter on that creature for each 1 damage prevented this way.

Set Ice Age

Rarity Uncommon

Artist Mike Raabe