So I hear y'all like Dark Magician now that he has a fancy new fusion. Maybe you want to make this deck and only have one magicians' souls lying around. Maybe you have none. Well, I am here to tell you that there is a way. It may not be the best way, but it will give you decent boards most of the time.
So the big questions here are: "Why two Dark Magician Girls?" and "What do I use instead of Magicians' Souls?"
Well, I was having trouble balancing the benefit and deficit of three Allure of Darkness in the deck. You could replace the second DMG with Jester Confit, but I found that with two Secrets of Dark Magic, two Dark Magic Veil, three Keeper of Dragon Magic, three Apprentice Illusion Magician and of course three Allure of Darkness, that DMG is rarely a complete dead draw. She is still material for one of the two fusion monsters you will summon the most with this deck.
Magicians' Souls is an amazing card, but affording a playset of it is asking a lot. The main way I make up for for only running one are the pair of Fusion Deployment and Dark Magic Veil. Fusion Deployment is searchable with only Keeper of Dragon Magic. It will special summon Dark Magician or Dark Magician Girl from deck or hand. This makes Dark Magician that much easier to summon to the field turn one. Yes, it also works with Predaplant Verte Anaconda. While Magicians' Souls is searchable, there is still the single copy of it in this build. However, if you cannot afford any copies of the card, there are two things you should do.
1.) Absolutely still run a playset of Soul Servant. The deck will not work with it.
2.) You can replace Magicians' Souls with Upstart Goblin, Jester Confit, a second Magician of Dark Illusion, or any dark spellcaster you can think of that might synergize. Cosmo Brain is the one that worked for me the best.
Ultimately, the deck is not at its full potential without a playset of Magicians' Souls. But did that ever stop Yugi? Nope! So if you want to play Dark Magician, go out there and do what you can!