Is Territorial Witchstalker legal in Standard, Modern, and Commander?

Territorial Witchstalker is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Territorial Witchstalker

Q: What type of card is Territorial Witchstalker?

Territorial Witchstalker is a Creature — Wolf. Its oracle text reads: "Defender At the beginning of combat on your turn, if you control a creature with power 4 or greater, this creature gets +1/+0 until end of turn and can attack this turn as though it didn't have defender."

Creature — Wolf

Defender

At the beginning of combat on your turn, if you control a creature with power 4 or greater, this creature gets +1/+0 until end of turn and can attack this turn as though it didn't have defender.

Set Wilds of Eldraine

Rarity Common

Mana Value 2

Artist Ilse Gort

Collector # 189

Scryfall Gatherer