Sage's Reverie is a uncommon Enchantment — Aura card from Fate Reforged (FRF), collector number 23. Current market price: $0.44 (foil $5.56), TCGplayer market prices via Scryfall.
Enchant creature When this Aura enters, draw a card for each Aura you control that's attached to a creature. Enchanted creature gets +1/+1 for each Aura you control that's attached to a creature.