Is Conversion Chamber legal in Standard, Modern, and Commander?

Conversion Chamber is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Conversion Chamber?

Conversion Chamber is an Artifact. Its oracle text reads: "{2}, {T}: Exile target artifact card from a graveyard. Put a charge counter on this artifact. {2}, {T}, Remove a charge counter from this artifact: Create a 3/3 colorless Phyrexian Golem artifact creature token."