When enchanted creature dies, you gain X life and draw X cards, where X is its toughness.
11/24/2014 Use the creature’s toughness when it left the battlefield to determine the value of X. If that number is 0 or less, you won’t gain life or draw cards. (You won’t lose life or discard cards either.)
11/24/2014 Fruit of the First Tree can enchant any creature, but Fruit of the First Tree’s controller will gain life and draw cards.