Lightform is a uncommon Enchantment card from The List (PLST), collector number C18-68. Current market price: $0.25, TCGplayer market prices via Scryfall.
When this enchantment enters, it becomes an Aura with enchant creature. Manifest the top card of your library and attach this enchantment to it. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.) Enchanted creature has flying and lifelink.