I don't think it works that way? I mean even though it turned out that he was pulled into a dream, Ince didn't die after he and Leonard's fate were swapped. Unless I'm remembering incorrectly, didn't Leonard still swap fates with him right before taking a lightning storm?
Leonard himself would've died from it but Ince Zangwill was fine. He didn't receive the fate of "dying from lightning storm" what he got was "being struck by lightning".
It's basically a glorified OP body switching charm.
It's a bit inconsistent, but it's certainly not a glorified body switching charm. If you take the Spirit World Plunderer fight, for example, Klein was put on the verge of losing control by seeing its weakest possible Mythical Creature Form for a moment (barely resisting thanks to Tyrant card's status) and was about to become a puppet. But as soon as he used Fate Siphon, Klein regained lucidity as if nothing happened and the Spirit World Plunderer was put into the verge of losing control, despite it possessing godhood to resist and Klein seeing its MCF well before the charm was activated.
When Audrey used it against Hvin Rambis, the fact that the latter only put enough effort to mentally subvert a Hypnotist was not really relevant and he was put in the verge of being brainwashed despite his godhood resistance.
But it's true that it's not a completely certain win condition, which is why I prefer Ninth Law.
While on this topic, Klein using the Fate Siphon charm on Gojo to prevent his escape is impossible while achieving initial control is impossible unless he is stupid (and my boi is not) cause he will receive the fate of having his own spirit body threads controlled and be on the verge of becoming a marionette.
Pretty sure the switch is selective. Evil spirit medici and Ince were both given mega bad luck on the angel level by the Misfortune Charm but Ludwell marionette who switched fates with Ince Zangwill managed to smoothly banish Medici to the Underworld and Ince Zangwill kept being unlucky. Which should not have been possible if he took Ince Zangwill's luck. Also, even if he did receive the fate of being controlled, it would only be the fate of initial control since Gojo can't have his casting interrupted by conventional physical means (I thought of Klein recording a Blue or Red during the fight to interrupt his casting twice but it's too difficult to succeed and probably doesn't last until complete control).
I reread the Mr. X fight and am more convinced that Klein can win this. Injecting spirituality doesn't affect initial control as badly as I thought it did, so Ninth Law can probably be used even without a convoluted plan.
Pretty sure ninth law cannot neutralize limitless as a whole.
Why not? We have prohibitions disabling whole categories of abilities (Teleportation, Stand-ins, Concealment, etc.) but it cannot neutralize a single specific cursed technique when it's crossverse? RCT, Six eyes and CE manipulation are all in perfect operation. Gojo just can't activate Limitless. It's pretty much an Inverted Spear of Heaven applied over an area.
I also doubt Klein always sees what is going to happen next especially since it pertains to what affects him in combat.
Maybe his precognition isn't perfect, but he also has a dozen seconds observing Gojo's actions and collecting information for his Spiritual Intuition to work and the opportunity to boost it by fiddling with a coin (makeshift dream divination). I believe that the odds that he can predict his trajectory are very high. Especially since this is the kind of stunt that he used during Mr. X's hurricane. Speaking of which:
Mr. X was flying through the skies in a hurricane but it didn't affect his control progress (in fact, the only action contributing to Mr. X freeing himself was Klein violently moving to quickly kill him with Death Manip/whatever reaping is currently classified in the profiles right now that bypassed head regeneration). No, flying does not work as a stimuli, only a violent impulse can work.
Either way, the initial control is broken and Klein will not want to be within range of the guy who will put hands on him regardless of his technique
? Gojo can't interact with the astral projection, though. Of course Klein will want to be in range of the guy who will not be able to put hands on him regardless of his technique.
Blink won't always be on the table as there are more useful beyonder powers in creeping hunger and switching between them does take some time (isn't instant).
Some weird points. One, if Blink is working the best for the wincon and is a great safety net, why would Klein switch it for abilities that might put him in danger for limited gain? Two, switches took one second before it was upgraded by fusing with Mr. A, afterwards it's described as instant from a Relativistic reaction speed perspective (Klein even spams Blink and Demoness of Affliction at Enuni).