Adding Weaknesses to Phenomena intervention

• Observation is, to some users, extremely tiring and takes a lot of energy. It is also the reason why some use of PI needs extreme amount of seithr to do so. This is evident in Kokonoe's case, when her observing two people is enough to tire her out. This is also especially true with self-observation, as shown with Terumi in Wheel of Fortune CD, when he is puking because of the toll of the constant use of self-observation.
• Self-observation, a type of observation when a user observe her/himself, is temporary, at least to normal users. This is evident with Terumi's case, when his appearance into the world during Ragna's childhood were temporary and only had weeks at least during Central Fiction.
• Observation, while it is a powerful ability, can't make something that is virtually impossible to a reality. This is stated during the conversation of Naoto and Raquel, when she stated that Phenomena Intervention can't make something impossible possible, which is evident with how Phenomena Intervention works.
• Observation is sometimes uncontrollable even by the user. Es and Nobody, even with their mastery of Phenomena Intervention, cannot stop the Embryo from passively altering reality with Phenomena Intervention. This is also true when the user has some sort of mental instability or has extreme emotional conditions. This is shown when Noel was subconsciously started Continuum Shift against her will, due to the panic and anger she is feeling alongside various mental abuse she took from Terumi.
• Users of self-observation doesn't automatically make them observers. The most popular example if this is Black Beast and Nox Nyctores, former being Anti-Observer Armament due to constantly observing itself and the latter constantly observing itself to keep its power strong or growing.

• Some usage of Phenomena Intervention can't be used properly by some users, or at least can't be used on scale that it can be usable in terms of battle. This is evident with Clavis when he can use Observation to stop time but isn't strong enough to warp reality.

Dragonmasterxyz said:

I also still have the issue of us treating it as though PI unleashes all the effects listed at once. I don't ever remember that happening thus making PI pretty much a grabbag.

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