Alright so this is a deck I made when i was 14-15 I basically just threw a bunch of random cards together so I could duel my friends. I found it a few weeks ago and bought a yugioh tin and put a few of the cards in my deck but now want to start fresh and make a good themed deck I just wanted your guys opinion on which way I should go based on the cards i have now.

First off let me say that right now I am just playing with my friends with some of my friends believe it or not I have a chance at beating some of them. But some can blow me out of the water. That I think is what made me decide to make a themed deck. I also want to maybe play in a tournament or two and as of now I would not stand a chance. And one last thing I do realize I have some banned cards Slifer the sky dragon I got years ago and the only other banned card in their I think is Chaos Emperor - Envoy Of The End and i got that in a random box type thing and like I said when I played with friends they don’t care about banned cards in fact they have some them selves

Here is my current deck like I said currently it is not very good at all

Fusion monsters
Dark Paladin
Black Skull Dragon

Monster cards
Slifer The Sky Dragon
Stardust Dragon/Assault Mode
Chaos Emperor - Envoy Of The End
Blue Eyes White Dragon
Mosaic Manticore
Buster Blader
Dark Magician
Red Eyes Black Dragon
Swift Gaia The Fierce Knight
Luster Dragon 2
Summoned Skull
Magical Marionette
Labyrinth Wall
Zombyra The Dark
Kaiser Sea Horse
Mystical Swordsman LV4
Dancing Fairy
Skull Dog Marron
Mad Dog Of Darkness
La Jinn Mystical Genie Of The Lamp
The Dragon Dwelling In The Cave
Familiar Knight
Familiar Knight
Giant Soldier Of Stone
Giant Soldier Of Stone
Des Koala
Raging Flame Sprite
Fortress Warrior
Cat’s Ear Tribe

Magic Cards
Level Limit - Area B
Sword Of The Soul-Eater
Mist Body
Mist Body
Mist Body
Raregold Armor
Pot Of Greed
Pot Of Greed
Monster Reborn
Dark Factory Of Mass Production
Soul Exchange
Cost Down
Fusion Gate
Emblem Of Dragon Destroyer
Emergency Provisions
Malevolent Nuzzler

Trap Cards
Call Of The Haunted
Magic Cylinder
Draining Sheild
Defense Draw
Alter For Tribute
Shadow Spell
Spellbinding Circle
A Hero Emerges
Sakuretsu Armor
Ominous Fortunetelling
Ultimate Offering
Dust Tornado

Like I said it sucks but I just wanted your guys opinion on if I could use any of these cards in a themed deck and if so which type of deck. I was thinking with the cards I have now the easiest route would be to start a dragon deck but I will let you guys decide that
I obviously know that all my cards are not going to be added to a new themed deck but wanted to now if any of these cards could be the basis are apart a new theme deck, I would especially like to make a Dragon themed deck

You should make a Dragon themed deck, as you have some good dragons in there. But the whole point of a deck is that it is different to everyone else’s, so you can keep Dark Magician in there and put in Buster Blader.

This is just a start, so good luck with it.