So this deck is designed to abuse current tournament time rules. The deck does play well online but is not built for it.
The goal of the deck is to stun with mystic mine and prevent your opponent from drawing outs. You stall/control the game into time and win in life point advantage although it is possible to end the game with just Wave-Motion Cannon and ring of destruction. Prohibition after testing is a great card that you can use to call any out a card the opponent might have in the main deck game 1 and is even better game 2 if you call the right cards. Oracle gives you chance to see what cards they sided in to out mystic mine giving you a chance to call the right cards with prohibition instead of calling something blind.
For the side deck i chose to run Leonidas, Emergency Provisions, and Michion mainly for the mystic mine burn mirror but Emergency Provisions and Michion can be played against just about any deck to help guarantee you win in life points advantage. Heat Wave is there to help stun if you dont feel confident in mystic mine resolving, it lets you stall until you can use prohibition to help guarantee the mystic mine sticks to the field.
The only thing to note about the extra deck is you should run all link monsters. This is because of Nurse Burn and Tri-and-Guess which i have yet to see anyone else play but i still recommend all links just in case.