Abzan Ascendancy is a rare Enchantment card from Khans of Tarkir (KTK), collector number 160. Current market price: $0.21 (foil $0.40), TCGplayer market prices via Scryfall.
When this enchantment enters, put a +1/+1 counter on each creature you control. Whenever a nontoken creature you control dies, create a 1/1 white Spirit creature token with flying.