Baneslayer Angel and Angel of Vitality work nicely together. Baneslayer Angel can go on the offensive since it has both lifelink and first strike. Then, once it has dealt damage, Angel of Vitality boosts the amount of life gained by one additional point. Just doing this attack once could be enough to get you over the 25 life needed for Angel of Vitality to get a +2/+2 boost, making it a 4/4.

While there are only two actual Angel creature cards in this deck, the theme of Angels shines brightly in this deck. Bishop of Wings gives you four points of life whenever an Angel enters the battlefield. Speaker of the Heavens is able to create a 4/4 Angel creature token simply by tapping itself, provided that you have at least seven more life than your starting total. With the amount of lifegain available in this deck, you should be able to reach this total easily, which will put you in a good position to win the game.