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Strike outs in quote. I recommend that instead of Infernal Dragons, you use Exploder Dragons, since they serve an all-around better purpose, you now have a monster to special summon with Masked Dragon, and they benefit the Cyberdarks' attacks if you have nothing else. Dark Horus... regrettably isn't anywhere near as good as thought... plus, you can only use its effect on your current Infernal Dragon, which can bring itself back, Hunter Dragon, which should stay in the grave, or your Cyberdarks, which won't activate when special summoned. Dark Nephtys will throw the deck off, since you want to negate stuff for Van'dalgyon and power-ups for Cyberdarks. You're gonna need your spells and traps. Cut out 1 Mirage Dragon. Nice effect, but throwing in 3 1600 ATK monsters with no faster means of getting it other then a draw leaves it vulnerable. Replace the 3rd with Twin-Headed. Nice DEF monster, and benefits Cyberdarks. Take out Power Bond. It won't serve Cyberdark Dragon that well since all it does is increase in ATK, unlike the Cyber Dragon fusions which have useful battle effects. Chaos Burst just take out. Stick with Sakuretsu, or if you have it, Dimensional Prison. Reckless Greed you shouldn't use, cuz it may actually give you a dead draw and leave you that way for 2 turns. Any Jar of Greed or Good Goblin Housekeeping would suffice, but I recommend throwing in more counter traps for Van'Dalgyon. Useful one now that Monster Reborn is back is Hero's Rule 2. Take out Cost Down, it's just not worth it. Take out Mausoleum of the Emperor, it's just not worth it. Throw in another Foolish Burial, or what I would do if I were you since you're using Scapegoat: Creature Swap. ESPECIALLY if you have a Cyberdark Horn or Keel available. Last but not least, get yourself another F.G.D.

Dark Horus shouldn't be used on monsters that won't get their abilities, and also offer terrible defense. Not only that, but its effect can only be used during your opponent's Main Phase. That is just awful.

Mausolem of the Emperor and Cost Down can be replaced with more Counter Traps, so special summon Van'Dalgyon instead of normal summoning him by tribute or paying LP, not to mention that your opponent can use the field's ability as well. If you're gonna stick with those cards, you may as well take out Van'Dalgyon, since you're not counting on his special summoning strategy.

I know Power Bond will increase Cyberdark Dragon's ATK to 2000, but that's all it'll do. It's not like Cyber Twin, Cyber End, or Chimeratech, where the card serves as a killing move, it just adds on another 1000 ATK that will, with all the cards and effects out, do nothing for you.

Chaos Burst is a bad choice of card, because it gets rid of your monsters. The tribute is a cost, so if your opponent attacks with you having no monsters then you can't use it. The 1000 damage isn't worth it.

-Normal summon Cyberdarks, special summon Van'Dalgyon.
-Don't bring back monsters with Dark Horus that won't serve you any good. Your opponent won't be attacking you with a 3000 ATK dragon out on the field, anyway.
-Instead of cards that would help you normal summon Van'Dalgyon, offer cards that will special summon him and make him useful. If you're gonna try normal summoning him, you may as well be using my cards and playing Blue-Eyes instead.
-To reuse cards like Cyberdarks, instead of special summoning them back with no effect, send them back to your deck to get their effect, like with Pot of Avarice. It's a great card to use with Future Fusion.
-Don't use Power Bond on a card that won't guarantee a win. Most likely, you won't have the 3 on the field or hand all at the same time anyway.
-Mirage Dragons do offer some great protection for all of your monsters, but 3 of them just leaves your monster zone weak. The only card you have to guarantee its protection is Mirror Force. Using Chaos Burst may leave you having to tribute Mirage.
-Masked Dragon offers you a lasting defense, and attack increase for Cyberdarks, but it could offer so much more. If you lose all 3 Masked, you have no other monster to special summon. This should be your monster for defense, not Dark Horus. Throw in Exploder Dragons, that way it gets you an awesome defense while taking out your opponent's monsters.