Sacred Assault
The nice thing about being a powerful Planeswalker is that you don't have to play by the rules. For example, you have the ability to custom-build your ideal creature, and that's exactly what the "Sacred Assault" deck lets you do!
This deck is packed full of Auras, which are a special kind of enchantment. All the Auras in this deck target a creature as you cast them, then enter the battlefield attached to that creature and modify what it can do. Some, like Pacifism, make the creature worse, so you want to target your opponent's creatures with them. The rest make your creatures better, and that's where the fun begins!
Of course, you have to start out with some creatures first. Gladecover Scout and Sacred Wolf each have hexproof, meaning your opponent can't target them with spells or abilities. Give one of them +1/+1 and protection from creatures by enchanting it with Spirit Mantle, or +2/+2 and a regeneration ability by enchanting it with Trollhide, and it becomes nearly impossible for your opponent to deal with.
The deck also features a number of Griffins. These flying creatures are difficult for your opponent to block, so making them more powerful with Auras is a quick ticket to victory. Perhaps the best target of all is Thran Golem, an artifact creature that gets supercharged as long as it's enchanted!

Once you've played the deck for a while, you can decide how to customize it. If you like the Griffin theme, increase the numbers of those cards. If you like the Aura theme, extra Mesa Enchantresses is a good call, as is the stunningly powerful Angelic Destinyan Aura that turns the creature it's enchanting into a mighty Angel!