Is Lifeblood legal in Standard, Modern, and Commander?

Lifeblood is legal in: Legacy, Vintage, Commander.

What type of card is Lifeblood?

Lifeblood is an Enchantment. Its oracle text reads: "Whenever a Mountain an opponent controls becomes tapped, you gain 1 life."

Enchantment

Whenever a Mountain an opponent controls becomes tapped, you gain 1 life.

Set Legends

Rarity Rare

Artist Mark Tedin

Enchantment Commander Legacy Vintage