Notes & Combos

I lost to a japanese player using this deck and decided to build my own version since it uses two of my favorite archetypes. I didn't have too much luck on pulling more copies of Primera and Emblema Oath, and since I mainly use Centur-ion as a engine, I didn't bother crafting more copies, but they would be helpful. The main combo of the deck going first is the Centur-ion Field Spell + a lvl 4 normal summon + a discard.

1. Activate the Centur-ion Field Spell, discard a card and place Trudea on a Spell/Trap Zone;
2. Special Summon Trudea, activate her effect to put her and Primera on the Spell/Trap Zones;
3. Special Summon Primera, search Centur-ion True Awakening;
4. Normal Summon any level 4 monster;
5. Xyz Summon Alembertian, search for Circular;
6. Circular Effect sending Nabla;
7. Alembertian Effect tributing itself to summon Nabla, Circular Effect to search for Superfactorial;
8. Nabla Effect tributing itself or Circular to Special Summon Diameter from the deck;
9. Xyz Summon Gagagaga Magician, use it's effect to Special Summon Alembertian from the Graveyard;
10. Xyz Summon Utopic Future, then Utopic Draco Future, set the traps and pass.

The optimal endboard is:

1. Utopic Draco Future (Monster negate, cannot be destroyed by battle or effects + Gagagaga Magician effect to detach 2 to negate a Xyz monster you control and change its attack to 4000);
2. Superfactorial (Xyz Summon Laplacian, send up to 3 cards to the Graveyard + Diameter Omni Negate);
3. Centur-ion True Awakening Counter Trap (Omni Negate + Destroy as long as you can send a monster from the Spell/Trap Zone to the Graveyard).

The extra deck is kinda flexible and you can switch Numeron Dragon, Draglubion, C62 and the Zoodiacs for anything else, but they won me some games. You can Xyz Summon Draglubion by using Mathmech Multiplication + Centur-ion Gargoyle II, you'll have to setup differently but it's doable. Bagooska won me a game against Galaxy Photon Dragon after I got Maxx C'd going first, and the Zoodiacs can turn 2 lvl 4s into a 4 material Zeus (plus attacking directly with Boarbow for it).

Main deck cards you could swap out are Sakitama and Centur-ion Phlanx.