Weftwalking is a mythic Enchantment card from Edge of Eternities Promos (PEOE), collector number 86s. Current market price: — (foil $1.25), TCGplayer market prices via Scryfall.
When this enchantment enters, if you cast it, shuffle your hand and graveyard into your library, then draw seven cards. The first spell each player casts during each of their turns may be cast without paying its mana cost.