Eyes of the Watcher is a uncommon Enchantment card from Fifth Dawn (5DN), collector number 30. Current market price: $0.34 (foil $3.03), TCGplayer market prices via Scryfall.
Whenever you cast an instant or sorcery spell, you may pay {1}. If you do, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)