Barkeep

Wild speculation below. No spren bond stealing needed then unless blade and plate are wanted. Gem Spike will only capture or kill the spren . To steal the bond possibly a nicrosil spike on the spren could work since the bond is pure Investiture or duralumin to steal the Connection between spren and Radiant. Kaladin stabbed a spren in the physical realm so this could be done outside shadesmar but will be tricky in close proximity to the Radiant. The spren will be furious. Having one of each order is useless since you can't please them all at once and bonds will degrade. The sprenquisitor could at best work as an interspren diplomat. Spike Radiant. Each surge probably can be caught by some corresponding metal or possibly nicrosil (which could be an all around stealing metal outside Scadrial because of it's Investiture properties).

If you created a pin/spike from a sapphire and stabbed a Windrunner and then pierced yourself with it you probably would capture the spren. Net loss in Power would probably be one of the surges. Oath level stays constant. Creation of a surgbinding "mistborn" this way by capturing the spren from each order will drive the person insane with 9 or 10 different spren of which many don't go along either with each other or the personality of the receiver. They cannot perform any moral action that will not alienate one or more of the spren and in the end make deadeyes of them. Must shardblades alway be summond in the hand of the owner or can they be materialized at a distance, like in the body of someone? In the later case the surgeborn can simply sit in a chair with 9 instantly summonable sharblades and cause problems for antagonists. Capturing the bond of a bondsmith spren by hemalurgy seems unlikely, this would only kill the bondsmith. In my head capturing a god spren would require a spike the size of a Saturn V rocket which be cumbersome to carry around in your body.God spren cannot be contained in a simple spike.

Hi all, Long time lurker here with my first post. What if the unmade were created one by one as each Herald broke the first time? Meaning the 10th unmade has yet to show up or already has (thinking of the Everstorm).