A little bit of a weird bug with Child of Alara. At first I thought the card was bugged to not trigger at all. But actually it seems to trigger after it dies, when another card is played.

See the screenshot below... I attack with my Child of Alara and it is blocked, killing it. However, its effect to destroy all non-land permanents did not immediately trigger. In the third screen shot, I played my Slippery Bogle from my hand, and then the Child of Alara effect triggered. Note that it seems to have triggered before my Bogle hit the field, as it was unaffected.

This is the second time I've encountered this bug. It's a bit strange, not sure what would be causing it.