http://www.wizards.com/Magic/Magazine/Article.aspx?x=mtg/daily/arcana/981

If you're playing the "Savage Auras" deck, you're interested in building the perfect creature. At the core of the deck is an array of Auras that upgrade the creatures they enchant. Some, such as Mammoth Umbra and Indrik Umbra, have totem armor in addition to their other abilities. Since totem armor protects the enchanted creature from being destroyed, your creatures wind up stronger and more resilient than ever!

You'll have to choose which creatures to enchant, but with so many good options, you can't go wrong. You could enhance a creature that has an evasion ability, like Armored Griffin (which also has vigilance) or Silhana Ledgewalker (which also has hexproof), and go on the offensive. Alternately, you could select a creature that's flat-out asking to be enchanted. Bramble Elemental and Dreampod Druid both provide Saproling tokens if enchanted, and an enchanted Krond the Dawn-Clad exiles a permanent each time it attacks! Meanwhile, Celestial Ancient and Sigil of the Empty Throne give you a bonus each time you cast an enchantment spell, and Auramancer and Dowsing Shaman recover enchantment cards from your graveyard. As long as you're building nearly invulnerable supercreatures, you might as well get rewarded for your efforts!

Your planar deck contains some cards that perfectly complement your plan. Akoum makes your enchantments even better than before. Astral Arena allows the single biggest creature on the board to dominate combat. Planar Disaster is a great phenomenon for you, since it'll destroy all creatures . . . except the ones enchanted by Auras with totem armor!