The Dark Magician Deck I play IRL
The deck follows the standard Dark Magician starts of playing Dragoon but uses the new Battle of Chaos cards.
Generally, you would probably play 2-3 Illusion of Chaos (You can probably go down to 1 or 2 Timaeus), I only pulled 1 and it's still worth running at 1 since it's super easy to search since you can use Soul Servant to top deck it and draw (which you can search for with circle and rod), then immediately activate it and just keep it in your hand forever grabbing whatever DM monster you want.
If you have the cards another Dragoon you can remove Dark Cavalry for it.
I generally side out Magician's Nav, Eye of Timaeus and one of the Timaeus Dragons for the general set of 2-3 cards that I would want depending on matchup.