Is Swarmyard Massacre legal in Standard, Modern, and Commander?

Swarmyard Massacre is legal in: Legacy, Vintage, Commander.

Swarmyard Massacre

Q: What type of card is Swarmyard Massacre?

Swarmyard Massacre is a Sorcery. Its oracle text reads: "Create two 1/1 green Squirrel creature tokens. Then each creature that isn't an Insect, Rat, Spider, or Squirrel gets -1/-1 until end of turn for each creature you control that's an Insect, Rat, Spider, or Squirrel. *"Life and death are a cycle, and it is I who keeps it spinning." —Decai, squirrelfolk rotmaster*"

Sorcery

Create two 1/1 green Squirrel creature tokens. Then each creature that isn't an Insect, Rat, Spider, or Squirrel gets -1/-1 until end of turn for each creature you control that's an Insect, Rat, Spider, or Squirrel.

*"Life and death are a cycle, and it is I who keeps it spinning."

—Decai, squirrelfolk rotmaster*

Set Bloomburrow Commander

Rarity Rare

Mana Value 5

Artist Michael Phillippi

Collector # 20

Scryfall