I'm Deckdjinn, a casual but consistent rank 5 player. I've come up with a Wild Miracle OTK deck you might like!
The core of this deck is using Open the Waygate and your "Giant" potential. Miracle away so you can build an army they don't always see coming or can answer by using your extra turn to either OTK of finish your opponent.
Note: You can see i din't use tech cards, because i wanted superfast spell action to cheapen the Arcane Giant and alot of those cards would just mess up tempo too much.
Open the Waygate: Extra turn is crucial for the OTK. Tip: don't drop it at turn 1 if you keep the Mountain Giant. Also, don't fire all your spells at once, keep your hand as full as possible in the beginning.
The Miracle Pack:
Mana Cyclone: because, more spells for the waygate!!
Sorcerer's Apprentice: key for making miracles happen
Arcane Intellect: more cards?
Babbling Book: best-1 drop for this deck, never replace it. Play it before you play the waygate (except against ? mage)
Mirror Image: holds off threats and is cheap, didn't find a worhty replacement in wild and great against tempo/weapon decks (Khadgar synergy)
Emperor Thaurissan: Makes your miracles and giants even cheaper (play on curve whenever you can).
Khadgar: Khadgar's logic: more giants make the OTK bigger and louder, right?
Stargazer Luna Luna does what Luna does best, draws you more cards.
Yogg-Saron, Hope's End only real optional card, but way fun and fits perfectly in the theme.
EDIT 2105: Deleted Frost Lich Jaina and one Mirror Image, added in: Molten Reflection and Simulacrum. They ad greatly to the synergies and have me on a winstreak to 11 sofar, let's see how far i can take this ^^