http://www.wizards.com/Magic/tcg/productarticle.aspx?x=mtg/tcg/magic2014/intropacks

Enhance your creatures with Auras to become powerhouses in combat. Any damage your opponent deals to you will quickly be undone with your life-gain spells.

Powerful Auras like Trollhide and Indestructibility make any creature nearly unstoppable, but you can get the most out of your Auras by being clever about which creatures you enchant. Dawnstrike Paladin and Serra Angel both have vigilance, making them especially potent choices to power up. Try to spread out your Auras among multiple creatures, creating more threats for your opponent to deal with. Consider waiting until your opponent's lands are tapped to minimize the risk that your creature is killed when you try to put an Aura on it.

This deck boasts powerful life-gain spells like Congregate and Elixir of Immortality, as well as a few great tricks to combine them with. Voracious Wurm enters the battlefield with a +1/+1 counter for each life you gained this turn, and Angelic Accord grants you a 4/4 Angel every turn you're able to gain 4 or more life. A great thing about having lots of life gain is that you can shrug off your opponent's small creatures and save your Pacifism and Hunt the Weak for bigger threats.

Additional Magic™ cards from the Return to Ravnica™ set that can further power up your deck include Ethereal Armor, an Aura that gives a creature +1/+1 for every enchantment you control, and Heroes' Reunion, a two-mana instant that gains you 7 life. The Magic 2014 core set's Archangel of Thune is incredible in any deck with creatures and white mana, but this deck's life-gain spells really make the most of its abilities.