What was your strat on that run to get such high scorium card? Minecart to repeatedly get the lens and upgrade a lot of times in one round?
I'm not Capri but my biggest resource was a 167.
He's going Lens almost every turn + lots of Prospect along the way too.
You can see he ended the run with over 200 ore remaining, so probably a lot of that upgrading came during the final stage as well.
He has 6 cards that don't draw cards, so occasionally the minecart will be on the bottom and he doesn't get to play his whole deck.
But usually he'll have the option to play the whole thing each turn.
So once he finishes the final stage score he has the option to go "draw whole deck, play Ore, Prospect Scorium" to run up the numbers for the screenshot.
Maybe he will reply but I would guess something like 15 or 18 of the buff points came from the final stage, and probably 12 in the stage before.
Once you get the deck very streamlined you can strongly accelerate the size of the resources because you can buff your best one (and play it if needed) every turn.
If you look at my gem and cube posts i use a combo that you get axe or in theory compass you draw your big card then prospect your big card then play it with trowel (0 cost tool play a resource) alternatively energy generation to play your big resource works too, lenses also are very helpful for it too but i didnt get offered them in my shops