Shrine of Loyal Legions is a uncommon Artifact card from New Phyrexia (NPH), collector number 155. Current market price: $0.22 (foil $2.44), TCGplayer market prices via Scryfall.
At the beginning of your upkeep and whenever you cast a white spell, put a charge counter on this artifact. {3}, {T}, Sacrifice this artifact: Create a 1/1 colorless Phyrexian Myr artifact creature token for each charge counter on this artifact.