[It's the deck Shenlong will mostly use (can change with time) i got to Gold 3 with it so i'd say it's pretty solid, i just added Pot of greed since it's banned on MD.
Anyway, if you have any questions or any suggestions just say it.]
Main Deck (60 Cards) :
Monster Cards (25) :
1x Gogiga Gagagigo
1x Frostosaurus
1x Giga Gagagigo
1x Megalosmasher X
1x Gagagigo
1x Mobius The Mega Monarch
1x White Night Dragon
1x Ocean Dragon Lord - Neo-Daedalus
1x Poseidra, the Atlantean Dragon
1x Kashtira Ogre
1x Levia-Dragon - Daedalus
1x Mega Fortress Whale
1x Mobius the Frost Monarch
1x Ocean Dragon Lord - Kairyu-Shin
1x Majioshaleon
1x Amphibious Bugroth MK-11
1Ă Blizzard Dragon
1x The Dragon Dwelling in the Deep
1x Minairuka
1x Electric Jellyfish
1x Mother Grizzly
1x Ice Knight
1x Barrier Statue of the Torrent
1x Nightmare Penguin
1x Silent Angler
Spell Cards (20) :
1x Raigeki
1x Harpie's Feather Duster
2x Fish Sonar
1x Back to Square One
1x Pot of Greed
1x Nightmare's Steelcage
1x Fissure
1x Swords of Revealing Light
1x Monster Reborn
1x Night Beam
1x Rage of Kairyu-Shin
1x Sea Stealth II
1x Sea Lord's Amulet
1x Fusion Weapon
1x Axe of Despair
1x Mage Power
3x A Legendary Ocean
Trap Cards (15) :
1x Skull Dice
1x Torrential Reborn
1x Bottomless Trap Hole
1x Draining Shield
1x Mirror Force
1x Metalmorph
1x Dimensional Prison
1x Kairyu-Shin's Dark Reef
1x Double Hooking
1x Sea Stealth Attack
1x Shadow Spell
1x Negate Attack
1x Trap Jammer
1x Cursed Seal of the Forbidden Spell
1x Magic Jammer
Extra Deck (11 Cards) :
Fusion Monsters (6) :
1x Transcendosaurus Gigantozowler
1x Guardian Chimera
1x Trishula, the Dragon of Icy Imprisonment
1x Garura, Wings of Resonant Life
1x Extox Hydra
1x Mudragon of the Swamp
Xyz Monsters (5) :
1x Gagagigo the Risen
1x Number 87: Queen of the Night
1x Pendransaction
1x Abyss Dweller
1x Poseidra Abyss, the Atlantean Dragon Lord