Private Research is a uncommon Enchantment — Aura card from Urza's Destiny (UDS), collector number 41. Current market price: $0.34 (foil $1.95), TCGplayer market prices via Scryfall.
Enchant creature At the beginning of your upkeep, you may put a page counter on this Aura. When enchanted creature dies, draw a card for each page counter on this Aura.