Interesting to say the least. I'm wondering if Monado Purge works on Alien X ( don't see any resistance to Ability Negation on Alien X's page ) will it revert him back into normal Ben Tennyson. Shulk's precog has been able to disrupt another character Zanza's own precog while Zanza was merged with not only space time but also the passage of fate.
Though at the end of the day and think Shulk and his hax from the Monado Arts will take the win. FRA Shulk.
Zanza also had Type 2 acausality and yet Shulk could still use his Precog. Also remember that Monado Purge does negate Regeneration as shown with the Telethia which would help Shulk out immensely assuming that Purge doesn't revert Alien X back into Ben and just negates his powers.