This is obviously a meme deck. My question to you is: Do you want to win games before you pull off the combo or strictly because of the combo? If you want to do it through the combo, I would try to think more in terms of sustain rather than control. You have opted for a choose 1 package. Hard Control of the board and ramping into UI might result in your opponent conceding once they get behind. The trick with a deck like this is to make them think they have a chance to win so they stay in the game. So instead of ramping with Mire Keeper (I don't think the extra mana or 2/2 will matter in the long run) and using Fandral synergies, I would look for a sustain package.
Moonglade portal for healing and trading, Earthen Scales with big taunts, and maybe Coldlight Oracle instead of a 2nd UI. A 2nd UI in your hand is a dead card. You cannot afford to mill yourself of any of the combo pieces. You could also think in terms of a heavy taunt package instead of relying on choose 1 cards or healing. I might even consider Naturalize in a deck like this so you can burn your opponents cards as you go. The problem with this 7 card combo is that you need to go through your entire deck and have 7 specific cards at the end. The earlier you draw them the more dead cards you have in your hand during the game. Good Luck!
So I just made a decklist for an OTK that I've been thinking of ever since I saw King Togwaggle. Here's the decklist
I'm open to suggestions!
Well it's not really Exodia, more like OTK, since the opponent can have enough health to survive it. Even Mage is not Exodia because Exodia wins right away regardless of Ice Blocks, like the Paladin DK Hero Power, the true Exodia in Hearthstone. Technicalities aside, I like it.
It really reminds me of the fun Exchange of the Spirit decks in Yu-Gi-Oh, expect instead of switching with Graveyard you switch both decks, but the effect is quite similar.
Edit: This is the card before the errata, in case people want to look it up, since the new version is worthless.