Improbable Win Condition (Standard Life Swapping)

In the midst of dorking around with Jaya, I ran across an idea that was fairly idiotic, but wanted to capture it before it slipped away into the back alleys of my mind. I'm not saying this is a good idea...in fact...it is a clear candidate for my 'Improbable Win Condition' segment. This one relies on some interesting, less-used cards. The two primary cards that make this deck happen are... These two high-cost spells have an interaction that is pretty funny when it works. With both on the battlefield, you can pay 4 at the end of your opponent's turn or at the beginning of your upkeep, dropping your life total to 4, then you can exchange your life total for theirs. When you untap, you can again exchange your life total with Evra and return to your previous life total. Playing this with Fling is probably a good idea, but I've kept it mono-white to start. The beginning of the deck is here: Let me know what you think.