Sigarda, Font of Blessings is a rare Legendary Creature — Angel card from March of the Machine: The Aftermath (MAT), collector number 182. Current market price: $7.71 (foil $11.64), TCGplayer market prices via Scryfall.
Flying Other permanents you control have hexproof. You may look at the top card of your library any time. You may cast Angel spells and Human spells from the top of your library.