It's of prime importance to mages, specialist mages, wild mages and bards, as it sets how many different spells of one spell level they may learn, as well as the chance a spell can be written down in the spellbook from scribing a wizard scroll, in Enhanced Editions it also determines up to which levels of spells the character can learn, counting in both natural scores and item altering.
For sorcerers, their spell casting capabilities are based solely on their levels, they can naturally cast 9th level spells and do not scribe scrolls, the only benefit they gain from a high intelligence score is a lore bonus.
For non-caster classes, intelligence combined with wisdom only adds a bonus to lore bonus.
For every class, a minimum score of 9 is needed to use wands and scrolls.
Having a high intelligence also helps surviving intelligence drain caused by mind flayers longer.
Intelligence also determines how many turns, rounds a character would be trapped by an enemy mage's Maze spell.
Spell Level for mages, bards
|Max # different spells learnable per spell Lvl for mages, bards||% to learn spell for mages, bards||Lore modifier|
Intelligence score altering Edit
Permanent boosts Edit
- Tome of Clear Thought in BGBG:EE
- The STAR card from Deck of Many Things in ToB: grants +1 if user is a sorceror, or has mage class
- Machine of Lum the Mad in ToB
Temporary boosts Edit
Temporary penalties Edit
- Intelligence drain by mind flayers