Is Hammer of Purphoros legal in Standard, Modern, and Commander?

Hammer of Purphoros is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

What type of card is Hammer of Purphoros?

Hammer of Purphoros is a Legendary Enchantment Artifact. Its oracle text reads: "Creatures you control have haste. {2}{R}, {T}, Sacrifice a land: Create a 3/3 colorless Golem enchantment artifact creature token. *All the world is Purphoros's anvil.*"