As a dark magician deck the plan is pretty simple. Get out Dark Magical Circle and a way to recur Dark Magician in order to beat interrupt your opponent, clear the field, and eventually beat them down with the Emo Mage.
In order to protect your back row based strategy we have, even more back row. Judgement can be used to negate everything, crack down can steal important monsters, and secret village stops that all so annoying twin twister and lightning storm.
To get to your play we have a lot of draw cards, ranging from the spell book engine, allure of darkness, and metalfoes fusion along with the normal draws of Magicians' soul and soul servant to make sure you have your play makers.
Through testing the deck did have an issue though, it lack the ability to take out big untargetable boss monsters. As a non meta example we have something like Blue Eyes Chaos Max Dragon, since it have 4000 attack you can't beat it over with your main strat, since it's untargetable you can't banish it. So what's the out? In the main you would have 2 options, kaiju or borrelsword. These help beat over such troubling issues for the decks that can bring out those types of beasts. When going against decks specializing in this sort of boss the side deck includes cards such as Dark Ruler No More, and Super Poly to get rid of them.
Some choices that many be questioned is the inclusion of Destrudo as well as the synchro monsters.
While Destrudo himself has little synergy with the deck his ability to make the deck go beyond what it is already capable of can not be ignored. He can easily be used to fusion summon out Dragon knight to protect your back row and then go into a lv 7 synchro, be it either Arcanite to destroy cards or F.A. Dawn Dragster to negate cards the next turn. If these play are not an option and he ends up as a brick he will at least always serve as a target for allure of darkness.
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