I was going to engage in this thread, but thought better of it. But my main insight: We could choose to call that "countermagical." The essence of the high-level mundane is the ability to throw around greater, lesser, least, major and minor AMFs/Dispel Magic. Personal AMF "nopes" spell targeting him. AMF as a touch attack works as a Dispel Magic. AMF as a ray (arrows), as a character-centered burst, and at 20th level, Disjunction.
Not T1, but an asset to a high-level T1 party. May run into the healbot problem of being repetitive and boring in play though.