Sigarda's Summons is a rare Enchantment card from Innistrad: Crimson Vow (VOW), collector number 353. Current market price: $0.58 (foil $0.62), TCGplayer market prices via Scryfall.
Creatures you control with +1/+1 counters on them have base power and toughness 4/4, have flying, and are Angels in addition to their other types.