... and now your brain kind of freezes and part of you wants to just instant concede even if you can probably win if you just remember the exact sequence of cards and effects you need?

I did end up winning though.

I whiffed and had to wait for the turn to get back to me so I can retry again with a fresh source of untapped mana. It was an Osgir Durdle Deck with Oswald Fiddlebender, the actual way it should have gone is Osgir probably just cloning all my discount effects and just having Spine/Artillerist (Both I had in my hand) either wipe the board with Scrap Trawler and Myr Retriever in the yard and Piston Sledge as my Sac Outlet and Cloud Key and Sculpting Steel and and Foundry Inspector as my cost reducers.... but my mind went to Grinding Station and Piston Sledge with Sol Ring and Origin Spellbomb as the way to (Recur Sol Ring and Origin Spellbomb)... except I had no Sol Rings.... and Fiddlebender couldn't fetch Sol Ring.... but I completely blanked that he could fetch Scrap Trawler for the Myr Retriever combo (I had Signed/Mind Stone on Board and Yard with Engineer to retrieve them) and this didn't really dawn on me until I whiffed and had someone accidentally mill me for a ton and had me realize 'Oh hey that's both Trawler and Retriever in the yard.... there's a combo there somewhere'.

Curious if I should just disassemble and accept this deck is too high IQ for me (as I literally can't remember most of the nuances I was thinking of when I built it as I play like a max of twice a month).

​

I think with the right mindset this would have been fun but honestly (For a while it was, I legitimately thought I was going to win then, I just got Grinding Station and was thinking I was now able to combo with it with Origin Spellbomb.... before I realized I had no mana rock to generate the infinite mana for it.... and no infinite Sac Outlet) the W didn't really feel earned and I'm ashamed to say it took me 10 minutes to just accept I whiffed my turn(....s, I had Ugin's Nexus with Karn getting it for me..... my mind also pivoted to getting Osgir out somehow and getting me two Nexuses but I had no clean way to get it to the yard)