Help with an enemy's AI Script

I agree. For this setup to work, attacks must never set or unset the Magitek status for a monster. No attack in the game can do it, except for the bugged Rippler spell.

Rippler is bugged because it can switch status that shouldn't never be switched. It is an error with the code of its special effect. It is notorious for switching the dog block status. Rippler can remove Interceptor from shadow permanently. If you mess around with another special status, it can do another interesting effects. As example, the Morph status can give Strago a feminine silhouette (The sprite of Terra as Esper).

Rippler should be used with care because of these bugs. You can consult a bug fix for Rippler here.