Cast tutor on the stack cast one with nothing now everyone looks through their decks sack efreet they either will lose a really good card to you or 10 life. Win-Win

Put out Temptest Efreet.  Copy it with Dance of Many and use whatever counter is handy.  I used quarters. 

Use the copy quarter's ability to trade ownership.  Now you have their card and they have a quarter.

That's fair!  lol

Cast Enchanted Evening to make every permanent an Enchantment.

Tortoise Formation your creatures giving them shroud and Tempest of light every other permanent.

If you had enough big creatures out, Kill them. they have nothing.

You lose all your lands.

Use Enchanted Evening and Greater Auramancy in any order, and throw out Tempest of Light to seal the deal, you lose Greater Auramancy but your opponent loses everything!

Let me know if you see any problems i dont.

With Enchanted Evening out play Indestructibility on the Greater Auramancy.

Cast either Cleanfall or Tempest of Light.

Too bad this doesn't protect against Global removal spell, DAMN! 

(Maybe Elspeth, Knight-Errant's final ability works with Enchanted Evening + Serenity

 and the Indestructibility on the Greater Auramancy won't be needed)