Okay, you take 3. Second main phase, I'll tap GB and cast Gaea's Blessing targeting myself, Vampiric Tutor, Diabolic Edict, and Dark Banishing, and pass priority...
I was like, "He's going to Sunder!" I couldn't wait to see myself proven right. Well, I'd forgotten about Upheaval, another card that can do the same trick...
Return everything to hand, then discard Warped Devotion, Doomsday Specter, 4 Islands and 2 swamps. Wow...that was effective, Play an Island from my hand, done. (Will let you fix your side of the board, so you don't lose the URL's here.)