Notes & Combos
I was inspired to play this by hendu and found it relatively easy to climb with. Main locks: Rivalry of the Warlords+There Can Only Be One: The opponent can only have one face-up monster, this makes it hard for them to link.
Number 86 Rhongo: removing the ojama lock gave me a lot of extra space. Fire prison often forces decks into link monsters (Even Floowandereeze) so the Numbers Eveil + Sales Ban is often live. You can also Sales Ban naming Ash Blossom if you have to dig that turn.
Fire Prison + Skill drain
Cauldron of the Old Man: Even though the effect damage is your main win condition, the life gain can serve as a lock of sorts in race situations.
Card choices/non-choices: Final Countdown: Optional. It is nice having a win condition that doesn't take up a spell zone. Allows Cauldron to go permanent gain life mode for race situations.
Prohibition can make Eldlich cry if you beat them to their game plan.
The extra deck has a couple of paths to Rhongo (Master Duel makes it really easy to not mess this up).
Numbers Eveil: 29+37+3+17=86 (Rhongo) 4 (numeron)+11+21+63=99 (Dragonar) Dragonar can go for Hope Harbinger, Stealth Kragan, or C1. This line is for when you have Numbers Eveil but not Sales Ban.
Pot of Desires is a more interesting option. I don't like it because I find myself having to stall until my opponent decks out with some frequency. However, it is good at finding multiple pieces of the main locks of the deck.
Top Secret Packs used

What is your reasoning behind running Rivalry over Gozen Match? Cool deck though, I might try to build this version since I thoroughly enjoy using hendu's list.

Tell me you don't know how to properly play the game by only showing a decklist. Quail: Hold my beer