The main strategy of this deck is to get both Dark Magician the Dragon Knight and Eternal Soul on your Field at the same time. this provides complete effect protection to your spell and trap cards, and effect protection for all "Dark Magician"s on your Field and allows you to search DM spells and traps or summon a DM from your hand or gy
The "win condition" of this deck is to complete the previous strategy, then summon and equip Red-Eyes Black Dragon sword to DMDK. This will boost DMDK Atk by a min of 2500 (1000 base 500 for each dragon monster on field and in GYs) giving you a min 5500 atk monster that is immune to your opponents card effects.