Leyline of Vitality is a rare Enchantment card from Magic 2011 (M11), collector number 183. Current market price: $3.18 (foil $10.17), TCGplayer market prices via Scryfall.
If this card is in your opening hand, you may begin the game with it on the battlefield. Creatures you control get +0/+1. Whenever a creature you control enters, you may gain 1 life.