Is Grave Strength legal in Standard, Modern, and Commander?

Grave Strength is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Grave Strength

Q: What type of card is Grave Strength?

Grave Strength is a Sorcery. Its oracle text reads: "Choose target creature. Mill three cards, then put a +1/+1 counter on that creature for each creature card in your graveyard. (To mill three cards, put the top three cards of your library into your graveyard.)"

Sorcery

Choose target creature. Mill three cards, then put a +1/+1 counter on that creature for each creature card in your graveyard. (To mill three cards, put the top three cards of your library into your graveyard.)

Set Ultimate Masters

Rarity Uncommon

Mana Value 2

Artist Jeff Simpson

Collector # 101

Scryfall Gatherer