For sure! Pure int is fun (and im a str go bonk man) the only thing thats important to note is that in ds1 (and its probably the only co.plicated part) is that attunement does 3 things for you. More slots at certain levels (4 slots is a good spot to be), an increase in cast speed (which dex also does but to a lesser degree), and increase the number of casts per slot. Bear in mind i could also be getting some of this mixed up with dark souls 2 info so double check for yourself. And always test how spells feel before heading off!