So, there was a request for a Sea-Serpent deck...
So Ive went ahead and made a post-RGBT Sea Serpent deck, focusing not on big sea serpents but more on the instant syncro ability of Deep Sea Diva and some other monsters. So it appears as below.
Oh, and it is, like Elysium, almost invincible to CCV.
Deep Sea Syncron
3 Deep Sea Diva
2 Sea Archer
3 Needle Gillman
1 Treeborn Frog
3 Bolt Hedgehog
3 Lightsworn Hunter Ryko
2 Junk Syncron
1 Plaguespreader Zombie
1 Lightning Vortex
3 Pot of Avarice
1 Monster Reborn
1 Heavy Storm
1 Mystical Space Typhoon
1 Card of Safe Return
2 Burial From a Different Dimension (Or use Royal Iron Wall)
1 Brain Control
3 Spiritual Water Art - Aoi
2 Raigeki Break
1 Mirror Force
1 Torrential Tribute
Extra Deck: 15 (simply because this deck has pretty messed up Syncro summoing targets... try for something similar. No Gugnir, etc wont change much. Tweak to your own needs.)
2 Armory Arm
3 Divine Levia Dragon - Gishlnodon
1 AOJ Catastor
1 Mystical Android
1 Junk Warrior
1 Brionac, Dragon of the Ice Boundary
1 Goyou Gaurdian
2 Black Rose Dragon
1 Gugnir, Dragon of the Ice Boundary
1 Dark Dive Bomber
1 Stardust Dragon
So. Some playing tips:
Divine Levia Dragon - Gishilnodon
1 Tuner + 1 non-Tuner Level 3 monster
When a face-up Level 3 or lower monster is sent to the Graveyard, this card's ATK becomes 3000 until the End Phase of this turn.
Generate tons of hand "advantage" with your Pot of Avarice and Salvage combos. Spirit Water Art - Aoi to boost your Gishildon to 3000 ATK while destroying the enemy's hand is fun.
Every turn, try to dish out a syncro(Junk Syncron, Deep Sea Diva, etc.) this assures your Gishilnodon at 3000 ATK for most of the game.
Treeborn Frog + Sea Archer. 2000 ATK level 3 Monster.
Level 7s come from Deep Sea Diva + Level 3 + Bolt Hedgehog. Or Junk Syncron + Revived Monster + Bolt Hedgehog. Instant feild nukes or Dark Dive Bombers.
Summon Deep Sea Diva. Effect bring out a 2nd Deep Sea Diva. Bolt HedgehogX3. Syncro Goyou and an Armory Arm. Equip and swing for big damage.
Topdeck Burial from D.D., S.Summon PSZ, Draw 1 with COSR. S.Summon 2 Bolt Hedgehogs, Draw 2 with COSR, Syncro for Goyou. Use Burial from DD, returning the 3 things. Topdeck 1 card and syncro Brionac. Bounce cards and normal summon Junk Syncron/Deep Sea Diva and somehow get your DDB. OTK.