Lands deck, based on this primer list : http://www.mtgsalvation.com/forums/the-game/commander-edh/multiplayer-commander-decklists/217247-child-of-alara-lands-dec (not claiming this list is a primer, though :P). Try to get the indestructible creatures on the battlefield as soon as you can but don't be aggressive, at least until your useful lands are on the battlefield. And if something is giving you problems, just kill Child of Alara to wipe the board. Kor Haven and Maze of Ith to protect you from attacks, or Maze's End as a win condition. Arena to destroy a few opponent's creatures, or even deal direct damage using Stuffy Doll. I use Prahv, Spires of Order to protect against direct damage, but the activation cost is so not worth that I'm thinking about replacing it with Nephalia Academy. Trespian's Stage to copy a land your opponent is destroying (but you can also get lands back with Splendid Reclamation). Blinkmoth Well to give a little bit of control. And Westvale Abbey as a poor man's Dark Depths, hahahaha. xD
Only send it to the command zone if it's going to be exiled, so it's ability can trigger. There's a lot of things to get the Child back: Call to the Netherworld, Soul Stair, Gravedigger, Grave Upheaval, Footbottom Feast, Naya Charm, Macabre Waltz, Yore-tiller Nephilim, Evolution Charm, Athreos God of Passage, Mortuary Mire. You also can destroy Child of Alara with Wrecking Ball, Angel of Despair, Angelic Purge (The extra casting cost), Damnation, Bontu the Glorified, High Market and Grim Backwoods.
Legacy Weapon, Angelic Purge and Resounding Silence to exile indestructible stuff your opponents controls.