Gravity Flux (research) should be scribable by both Wiz and Enc
 

There are two versions of the Gravity Flux spell depending on which class researches it, but it seems it was scribable by either class despite what the scroll said.

Thread (with bonus Gordon getting schooled) from 2000:

https://groups.google.com/g/alt.game...m/tiGbNcn9ojsJ

Another thread from 2001:

https://groups.google.com/g/alt.game...m/58MGXEXG6jYJ