Soulcatchers' Aerie is a uncommon Enchantment card from Judgment (JUD), collector number 25. Current market price: $4.73 (foil $22.44), TCGplayer market prices via Scryfall.
Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on this enchantment. Bird creatures get +1/+1 for each feather counter on this enchantment.