focusing on baleful strike to gain more AP, but knowing that dark matter take too long to hit, so only get it when the event horizon is level 3

starting with Dorans Ring you'll start with 42 ap, gatting a good farming buy the boots of speed and another dorans ring to help with mana regen and AP, is the enemy team have a good jungle buy 2 wards to put on the mid bushes, making the Rylai's as the first item grant's you a big amount of life for a veigar, at least you'll take longer to die, and you'll get slow that help you to kill the enemy. A normal game usually the game end's when veigar complete the Rabadon. After they have nerfed Deathfire Grasp I really don't think that's good to veigar carry one, 'cause don't do much damage.