I never thought about combining Golden Castle with Gren Maju but now that i think about the banish effects works perfect with Gren Maju and also thank you for the nice Deck idea :3
You say that going first you flat out lose, however you weren't taking into consideration or using his sidedeck, which he sided into go first friendly cards for the games he knew he had to go first...
The side deck had 3 PSY-Frame Gamma, 1 Driver, 2 cosmic cyclone, 3 twin twister, 3 EEV, and 3 There can be only one. More recent lists also include things like Nbiru or Gnomaterial.
This list is way more well-thought-out than I expected it to be when I heard Gren Maju topped. I was expecting Golden Castle to be a gimmicky do-nothing banish tech, but it's surprisingly well incorporated in the strategy.
I'm pretty sure that Dark Ruler No More has made this deck a lot better now. I would say though to keep maining the Super Polymerizations and to just side in the Dark Ruler No More, in case you go up against those decks that do make big monster boards, but are unaffected by Super Polymerization.
Damn. A lot changed in 6 months. Pankratops is now limited. The Knightmare package is now reduced to three coz Mermaid got hit with the ban hammer. And Super Poly is still unlimited.
Good in duel links and in the TCG. Who would've thought a deck with a 4k normal summon and a field spell that specials summons from deck for a plus 2 and a blazing mirror force effect would be good?
Yeah but he did detach. And you need to detach to get Gizmek in the graveyard in the first place. And there isn't much point in even summoning Sanaphond if you aren't going to detach, unless there are an enormous number of cards in the graveyards.
He isn't running Pot of Extravagance, while Gizmek and EoM allow you to choose what you banish; so he only needs to run multiples if he's worried of fusion Trish or on to off-chance he draws 2 super poly. I think if you're running more Super Poly targets in this deck, you're better off running different ones like Thunder Dragon Titan or Metalfoes Crimsonite to give more options. Also Knightmare Phoenix and Barricade Blocker are reasonably good in this deck, I wouldn't say they're all useless.