Tashan and Malosi series should not stack until December 1999 patch era

[Dolalin]

December 1, 1999 7:00am

The following changes and enhancements have been introduced with the latest patch:

Spell Enhancements

...

- Tishan (Enchanter) and Malise (Magician/Shaman) spells now stack.


https://wiki.project1999.com/Patch_Notes#Spell_Enhancements_3
http://everquest.allakhazam.com/history/patches-1999.html