All right, I have a theory that nicrosil compounding is just as good if not better than atium compounding, as while atium allows you to compound youth, nicrosil lets you compound investiture. So let’s say that a nicrosil twinborn is invested with about 1 BEU.(Idk if that’s right but for I’m doing it for simplicity’s sake.) If they store their powers in a metalmind for 1 hour, then burn that metal for 10 hours worth of their powers and store it all in a metalmind, and repeat this process until they have 100,000s(maybe even 1,000,000s?) of hours stored up, then if they tap their investiture at an incredible rate, allowing them to become very heavily invested, essentially granting agelessness, as we have seen is a side effect of being invested enough, as we have seen with Dawnshard holders, as well as awakeners of the 5th heightening. Granted they would need to keep this up going through a ridiculous amount of nicrosil. Another thought of mine is if a nicrosil twinborn went to Roshar, and bonded a radiant spren, drew in some stormlight and stored it in a metalmind, they could in theory compound it for unlimited stormlight,(also provided they have a ton of nicrosil on them) this could be used on top of my previous idea to essentially make an immortal knight radiant who never runs out of stormlight. Thanks for taking the time to read this! Is it plausible?