Retreat to Coralhelm is a rare Enchantment card from Secret Lair Drop (SLD), collector number 407. Current market price: $6.08 (foil $6.89), TCGplayer market prices via Scryfall.
Landfall — Whenever a land you control enters, choose one — • You may tap or untap target creature. • Scry 1. (Look at the top card of your library. You may put that card on the bottom.)