Leyline of the Void is a rare Enchantment card from Magic 2011 (M11), collector number 101. Current market price: $1.27 (foil $10.92), TCGplayer market prices via Scryfall.
If this card is in your opening hand, you may begin the game with it on the battlefield. If a card would be put into an opponent's graveyard from anywhere, exile it instead.