welcome,
crystals increase resistances...
min iceri is a charm increasing mana (60 points if i remember correctly)...
there is a summon doll in each act... if i remember correctly in act 1 the summoning doll is in a coffin in the room with the ill imp...
edit link to charm effects :
http://www.larian.com/ubbthreads/sh...&sb=5&o=&fpart=1
