Like the name of the deck suggests, the goal of this deck is to bring out each and every piece of Exodia into your hand to win the duel. The pieces can be gathered through excessive drawing or card search effects from monsters such as Legion the Fiend Jester and Blue Dragon Summoner. Here are the 2 methods listed below.
Method 1: Card search
As stated above, Blue Dragon Summoner and Legion the Fiend Jester will be able to add normal, Exodia parts from your deck to your hand as they are Spellcaster-type monsters which fits the criteria of both of the said cards. However, they have their limitations as well. They cannot search for effect, Spellcaster-type monsters. This means that Exodia the Forbidden One cannot be brought out by card search effects with this deck.
Method 2: Excessive drawing
Cards like Wonder Wand and Jar of Greed will grant you more draws to consistently gather Exodia parts. Both methods are able to thin out your deck. However, this is the only method in this deck that allows you to consistently draw for Exodia the Forbidden One. Pot of Dichotomy and Legion the Fiend Jester are flexible cards as they are able to return an Exodia part from your graveyard to your deck/hand in case your opponent sends one into the graveyard. Furthermore, Pot of Dichotomy allows you to draw 2 cards provided that its requirements are met.
You only have 1 card out of a minimum of 25 that can be Heart of the Underdog, besides that it only works with normal monsters (the chain breaks if it's a spell, trap or effect monster), so you need a bunch of luck to draw this card on your first or 2nd turn while you deck is weak to spell and trap cards of the opponent.
This deck doesnt work. Pot of Dictonomy requires 3 different types of monsters, this deck only has spellcasters in it.