Lumithread Field is a common Enchantment card from Future Sight (FUT), collector number 25. Current market price: $0.24 (foil $0.70), TCGplayer market prices via Scryfall.
Creatures you control get +0/+1. Morph {1}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)