What deck needs to cast 20 spells in a single turn? Blue-Red Storm, of course! It may sound tough, but this deck is surprisingly easy to win with, and the turns you combo off with it are fun to navigate, though not nearly as enjoyable for the opponent. Baral, Chief of Compliance adds a new dimension to the deck and allows you to be much more reliant on having a turn two creature. The looting part of Baral, Chief of Compliance certainly comes up as well. The list that Martin Muller made top four of Grand Prix Copenhagen is what I recommend moving forward.
There are many games where a situation feels hopeless and then all of a sudden you start chaining spells together and find a way to successfully go off. We certainly drew Gifts Ungiven at exactly the right time a lot, but with all of the card draw it is generally easy to find a specific card like that. The turn after resolving a Gifts Ungiven there should be enough gas to go off through even some disruption. Luckily, we didn't run into cards like Rest in Peace or Chalice of the Void that are generally very difficult to beat.
Most of the matches it didn't matter very much what the opponent was doing, it was more about how much time we had before trying to win. For instance, with an opposing Ugin, the Spirit Dragon on 11 loyalty, it was obvious that it was time to pull the trigger. Before starting to try and go off you generally have a pretty good idea of whether you have enough gas to win, assuming no disruption from the opponent.
Against Ad Nauseum, it was clear that we needed to win before our opponent reached six mana. Grafdigger's Cage is very good against Blue-Red Storm as it shuts off Past in Flames. Past in Flames is generally how you win, but sometimes it becomes time to audible to Goblin Electromancer beatdown. Empty the Warrens is the general backup plan against hate cards, so I likely should have had more in the deck after sideboard, though Grafdigger's Cage isn't always played in Ad Nauseum.
Storm is more powerful than it has ever been, so decks without very difficult-to-answer hate cards are going to have a tough time of beating Storm. Even discard often isn't enough as the combo pieces are quite redundant. Other combo decks also have trouble with Storm, because Storm often wins faster than other combo decks. For instance, the Dredge matchup is more or less a race, and the same can be said against Scapeshift.
Admittedly Death's Shadow decks aren't great matchups for Storm, and that is currently what is holding back Storm from being a tier one deck. Those matchups are very winnable still, and Pieces of the Puzzle out of the sideboard is great against decks trying to trade one for one with discard spells. Storm feels amazing when you are winning with it, but you will also run into some frustrating situations that didn't arise in this particular set of matches, so it can be a mixed experience.
Thanks for reading,