My friend thought this one up. You need Equilibrium in play, and 2x Cloud of Faeries, and 1x Brain Freeze in your hand. First, play 1 Cloud of Faeries, next, play the second paying the extra 1 mana, and send the original back to your hand. Repeat this as many times as necessary, and then play Brain Freeze, Your opponent's deck is gone!
Equilibrium
Cloud of Faeries
Brain Freeze

I thought this one up for putting an opponent in a tight place. You need some big creatures on the field to stall, because you'll be needing a lot of mana, but get 1x Plague Wind, and 1x Armageddon in your hand. You'll need to have a lot of mana for it, but I've done it once before using 2 turns for the move.
Plague Wind
Armageddon