Is Erratic Portal legal in Standard, Modern, and Commander?

Erratic Portal is legal in: Legacy, Vintage, Commander.

What type of card is Erratic Portal?

Erratic Portal is an Artifact. Its oracle text reads: "{1}, {T}: Return target creature to its owner's hand unless its controller pays {1}. *"In Barrin's name!" cried Lyna as Hanna's sword passed through her, "Ertai sends word that the portal is open—but not for long!"*"