Is Wooden Stake legal in Standard, Modern, and Commander?

Wooden Stake is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Wooden Stake

Q: What type of card is Wooden Stake?

Wooden Stake is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +1/+0. Whenever equipped creature blocks or becomes blocked by a Vampire, destroy that creature. It can't be regenerated. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)"