No matter how powerful a Wizard might be, he cannot cast a spell where the total of the natural dice scores is less than 3. A dice total of 1 or 2 is always considered to be a failure, despite the level of the Wizard. This is true regardless of any bonuses, from any source. Even the mightiest and most learned Wizard needs to coax a certain amount of raw power out of the Winds of Magic in order to cast a spell.