I made the perfect deck for storming stormwind! Most of the time your damage stops because if you are able to beat stormwind’s deck and damage a lot, you will eventually run out of cards and fatigue. Also, stormwind has a larger deck than yours.
Solution? Play warrior with dead man’s hand! If you can survive the opponent’s deck, then you can wait until you have two dead man’s hands in your deck and keep using one to shuffle more cards (including a dead man’s hand for the future) into your deck! If you repeat this, you will never run out of cards and can play forever, while stormwind takes fatigue damage!
How do you do this? By using control warrior tools: hard removing their giant stormwinds with tools like execute (works well with new hero power), and clearing with brawl and plague of wrath.
Use neutral tools like voodoo doll to destroy minions (works well with new hero power), antique healbot and khartut defender to heal or any warrior cards to gain armor if you prefer, using acidic swamp ooze and corrosive sludge to remove their weapon to get a break (though it grows fast after being destroyed so you only get a few turns break), ancient brewmaster to return your favorite minions to your hand to use again, skuling geist to thin his deck, and chief inspector to destroy secrets whenever they come up (you could use more anti-secret cards if you want to better destroy his 4 secrets).
Here are two replays. The first is funny because I gave my opponent a treasure through mirror entity that is the board clear that shuffles into his deck. So my opponent never fatigues and clears my board every turn, but with dead man's hand I can play infinitely, so that could go on forever.
Here's the actual game where I could have won off of fatigue damage and minion damage forever. Stormwind conceded after around 800+ damage. I wonder if there is a single number that is a threshold for when Stormwind concedes.