Post: #2

I have that feature disabled too and my liches cast s_hallucination. Look in sphere_spells.scp and look at [spell 70], see if there is anything different for that spell. If not, maybe your liche has a spellbook in it's backpack? If so, try removing it and adding an event with @spellselect to your liche as a means to manage which spells it can and can not cast. Unfortunately spells over circle 8 can not be casted from a spellbook, so if a spellbook is in the monster's backpack it will not try to cast anything over spell #64 (and firebolt and hallucination are both over spell #64). You CAN add a necromancer book with spells in it to allow any npc to cast necromancer spells.