Conversion Chamber is a uncommon Artifact card from New Phyrexia (NPH), collector number 133. Current market price: $0.15 (foil $1.99), TCGplayer market prices via Scryfall.
{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.