Ok so after testing, this deck is insanity. You go first, you win. Goukis make crazy boards going first that make your opponent lose instantly because they cannot target, destroy by battle, or destroy by card effects your monsters. The combos to this deck are stupidly good but really hard to master. I will explain how to extra link your opponent... The first step is to make
Isolde, Two Tales of The Noble Knights, then use her second effect to send
Divine Sword - Phoenix Blade and special summon
Gouki Octostretch. Then, from the first effect of Isolde you should have added either
Gouki Bearhug or
Gouki Riscorpio and
Gouki Headbatt from the Gouki you sent to the graveyard as material for Isolde. Keep in mind you can use
M-X-Saber Invoker too to summon Isolde. Then special summon Headbatt by sending Bearhug or Riscorpio and make
Knightmare Goblin but do not use Goblin's effect. Search off the
Gouki Octostretch that was used to make Goblin to get
Gouki Rematch. Use Rematch to special summon two Goukis in your grave.
Foolish Burial can help if you have it in your hand before you use Rematch that way you can send a Gouki that you haven't used its search effect yet. After that, use Isolde and the two Goukis on the field from Rematch to make
Firewall Dragon to the right of Goblin. Use the effect of Divine Sword in your grave to banish two warrior monsters, preferably not the Goukis and add the Divine Sword to your hand. Then make
Knightmare Mermaid using Goblin and put it up on top of Firewall so that they are co-linked and activate Firewall and Mermaids effects, Mermaid as chain link one, Firewall as chain link two. Send Divine Sword as cost for Mermaid and special summon the monster from your hand from Firewall's effect right next to it on the left or right side and then
Knightmare Corruptor Iblee on the other side of Firewall and draw one card from Mermaid being co-linked. Keep in mind when you are special summoning monsters from your hand off Firewalls effect they need to be Goukis that way you can keep searching Goukis and keep special summoning off Firewalls effect. Next, use Divine Sword again to add it again. Then, use Iblee and the monster from Firewall's effect to link summon the second Goblin to the left of Firewall where the previous Goblin was. Go ahead and use both Firewall and Goblin's effects, doesn't matter what order, and pitch the Divine Sword again. But do not use Iblee's effect in grave! You need Iblee at this point. Special summon another Gouki from your hand to the right of Firewall. Make sure to draw one card since Goblin is co-linked. Then use Firewalls effect to add Octostretch and Iblee from grave back to your hand. Try to keep the Octostretch in your hand as long as possible because you need it for
Linkuriboh later. Perform your second normal summon with Iblee right next to Goblin and special summon the other Goblin in your grave off Iblee's effect to the left of Iblee. Proceed to link summon
Underclock Taker using Iblee and the monster to the right of Firewall where the monster to the right of Firewall was. Use Iblee's effect this time to special summon Iblee to your opponent's field. And of course, Firewall's effect triggers *sigh*, special summon another monster from your hand where Iblee was, to the left of Goblin. Then use that monster and Underclock to make
Trigate Wizard in between the two Goblins. Of course, Firewall goes off again... Special summon again to the right of Firewall. Use that monster and the Goblin that has its effects negated that was summoned off Iblee to make
Knightmare Phoenix to the left of Trigate Wizard. Then use Firewall's effect to special summon but this time, special summon a level one whither its
Droll & Lock Bird or Octostretch if you were able to keep it in your hand, etc. Go into Linkuriboh on top of Trigate Wizard to extra link your opponent. Finally, that triggers Firewall's effect once more allowing you to use Firewall and the monster you special summoned off Firewall as material to link into
Knightmare Cerberus to the right of Goblin where Firewall originally was. That's how you extra link your opponent! You can also make
Naturia Beast going first using
Glow-Up Bulb and
Spyral Super Agent or
Gouki Suprex. Enjoy the tutorial and deck profile!