Is Ashcoat of the Shadow Swarm legal in Standard, Modern, and Commander?

Ashcoat of the Shadow Swarm is legal in: Legacy, Vintage, Commander, Historic.

Ashcoat of the Shadow Swarm

Q: What type of card is Ashcoat of the Shadow Swarm?

Ashcoat of the Shadow Swarm is a Legendary Creature — Rat Warlock. Its oracle text reads: "Whenever Ashcoat attacks or blocks, other Rats you control get +X/+X until end of turn, where X is the number of Rats you control. At the beginning of your end step, you may mill four cards. If you do, return up to two Rat creature cards from your graveyard to your hand. (To mill a card, put the top card of your library into your graveyard.)"

Legendary Creature — Rat Warlock

Whenever Ashcoat attacks or blocks, other Rats you control get +X/+X until end of turn, where X is the number of Rats you control.

At the beginning of your end step, you may mill four cards. If you do, return up to two Rat creature cards from your graveyard to your hand. (To mill a card, put the top card of your library into your graveyard.)

Set Teenage Mutant Ninja Turtles Source Material

Rarity Mythic Rare

Mana Value 4

Artist Michael Dooney

Collector # 6

Scryfall