I found it. Something even more degenerate than before.
For your full combo, you just need any 1 discardable card in hand. The rest is extra/uneeded for your standard line.
You may notice that this deck is playing little to no extenders, and that would be because you do not need them. Any card in your hand that isn't a power staple, floodgate, or hand-trap is undesirable, as this deck has almost flawless consistency, besides some truly god atrocious hands where you draw every single orcust/phantom knight in a deck of 60 cards.
Player position is very important for your combo due to the link arrows, so keep that in mind when choosing where to sit on the table.
If you want me to talk about how the deck actually functions (which you have all the right in the world to do lol, that's why there is a description), you aim to abuse the fact that Grinder Golem as a DM is absolutely broken:
1 - It is a DARK, so you have access to verte + dpe, all the small Bystials, the entire Orcust engine (besides the knightmares), millennium eyes as an extra copy of called by the grave, the entire PK engine, Accesscode Talker as the best link-4 finisher in the game, Time Thief Redoer which is extra annoying in a free-for-all, and no one less than the True King of All Calamities (which comes up when using orcusts + PK's).
2 - It is a Fiend, so you actually have access to all the Knightmares, which are arguably the best cards ever printed in terms of versatility and ease of use, and also especially help this deck in making any 2 monsters w/ different names FULL ORCUST + PK COMBO :))
3 - And if all that wasn't enough, it's utility as a premium starter is made even better by the Deck Master Rules, which means that you can not only loop it by bouncing it back to your hand w/ Akashic Magician and Security Dragon, any time Grinder Golem leaves the field, after all efects resolve and priority is passed back to you, you may opt to pay LP in incremental amounts to bring it back to the DMZ, from where you can summon him from, again and again, non-once per turn.
So basically, make DPE, make redoer, set up a vfd on your oponent's turn and set 5. Simple enough, the line doesn't change much.
Thanks a lot to "That person you hate#6076" and "Person#4260" (couldn't find them on YGOProdeck) on the discord for actually going and playing the game with me through TTS, and managing to face Orcust BS repeatedly without DDoS'ing me.