Is Weatherseed Totem legal in Standard, Modern, and Commander?

Weatherseed Totem is legal in: Modern, Legacy, Vintage, Commander.

Weatherseed Totem

Q: What type of card is Weatherseed Totem?

Weatherseed Totem is an Artifact. Its oracle text reads: "{T}: Add {G}. {2}{G}{G}{G}: This artifact becomes a 5/3 green Treefolk artifact creature with trample until end of turn. When this artifact is put into a graveyard from the battlefield, if it was a creature, return this card to its owner's hand."