Crystal Seer is a common Creature — Vedalken Wizard card from Guildpact (GPT), collector number 23. Current market price: $0.05 (foil $0.38), TCGplayer market prices via Scryfall.
When this creature enters, look at the top four cards of your library, then put them back in any order. {4}{U}: Return this creature to its owner's hand.