Is Vilespawn Spider legal in Standard, Modern, and Commander?

Vilespawn Spider is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Vilespawn Spider?

Vilespawn Spider is a Creature — Spider. Its oracle text reads: "Reach At the beginning of your upkeep, mill a card. (Put the top card of your library into your graveyard.) {2}{G}{U}, {T}, Sacrifice this creature: Create a 1/1 green Insect creature token for each creature card in your graveyard. Activate only as a sorcery. Power/Toughness: 2/3"