Hi during the beta I made two mod that restricts spells to research lvl 4 and 6, respectively.
At that time item modding was not as developed, and there were some other problems. One problem remains as far as I know, the problem of modding a second spell with identical name as another one. I couldn't get spellnumber to work, so I'm not sure if it is implemented. If any of you more experienced modder know how this is done, please make the second 'Summon Scorpion Man' disappear as well.
What does it do?
It removes all spells and items of research above 4 (excluding the scorpion man), like in the old dom-ppp-demo-days.