Is Centaur Garden legal in Standard, Modern, and Commander?

Centaur Garden is legal in: Legacy, Vintage, Commander.

What type of card is Centaur Garden?

Centaur Garden is a Land. Its oracle text reads: "{T}: Add {G}. This land deals 1 damage to you. Threshold — {G}, {T}, Sacrifice this land: Target creature gets +3/+3 until end of turn. Activate only if there are seven or more cards in your graveyard."