The Main Event: Gouki At the beginning of the Duel, add 1 "Gouki Suprex", 1 "Gouki Twistcobra", and 1 "Gouki Riscorpio" to your Deck, unless you already have 3 copies of the respective card. Then, add 1 "Gouki The Great Ogre" to your Extra Deck. The following effect can be used once per Duel: Select 1 "Gouki The Great Ogre" you control. Until the end of your opponent's next turn, that monster will not be destroyed in battle. Also, during your opponent's next turn, your opponent cannot select another monster as an attack target while that monster is face-up on the field.
Duel against any level 10 LDs in the gate (Recommended DM level 10) so you can do this easily/reliably. The way to keep summoning Great Ogre is to special summon the Link 2 monster (In this case Jet Ogre) + The Mask of Remnant + Il Blud + Zombie World's effect.
Give Guardian Statue to your opponent by using Mystic Box so the AI will return the Great Ogre, which will put the materials back to the grave so you can do the combo again.
Use the draw cards and Good Goblin Housekeeping to help get 2 Worm Linx and use them as Link Materials for Jet Ogre.
Activate Zombie World and tribute summon Il Blud, then normal summon the Il Blud again next turn.
Use Il Blud's effect to revive any Gouki monsters, then activate Super Team Buddy Force Unite! to revive another Gouki Monsters so you can use them to Link into Great Ogre.
Normal summon Guardian Statue when you can, and use Mystic Box to give it to your opponent.
Mask of Remnants helps prevent a deck out before your opponent.
Use Localized Tornado when your opponent is about to run out of cards.