I need some help on a deck that I am working on right now. I don't have it made yet but I'm going to base it on White Horned Dragon and King Dragun. This is my first dragon deck so I need some ideas. Plz help.

If your goal is summoning King Dragun to then summon powerful Dragons, you will need to consider a few things in your deck building process. The first of which, is that King Dragun doesn't have any tricky summoning requirements, that means you can use The Dark Hex Sealed Fusion, Summoner of Illusion, Dragon's Mirror, and yes, even Polymerization. With this in mind, your deck should use at least two copies of the Dark Hex Sealed Fusion, and several of Divine Dragon Ragnarok, and possibly Lord of Dragons. If you plan on using Polymerization, some King of Swamp or Fusion Sage would do quite well. And, if you use King of Swamp, I would strongly suggest two Dragon's Mirror, because you can discard king of Swamp to get a Polymerization from your deck, and then if you have either Lord of Dragons or Divine Dragon Ragnarok in the grave, you can fuse them with Dragon's Mirror.

What you should do if you want a strong deck, is to use Future Fusion, plus King Dragun, Five-Headed Dragon, and any other really strong Dragon Fusion.

I have to go soon, but I'll be back to post more later.