Peer Through Depths is a common Instant — Arcane card from Champions of Kamigawa (CHK), collector number 78. Current market price: $0.21 (foil $6.90), TCGplayer market prices via Scryfall.
Look at the top five cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.