kinda dumb that you can't get this ring if you don't have at least 10 int, considering that it also boosts pyromancies, and every build in the game can potentially benefit from pyromancies to some extent.
A lot of the starting classes start with at least 10 intelligence, and the ones that don't start off only one or two points away from 10. Are you complaining that you have to invest one or two points in intelligence to cast stronger spells?
this does work with miracles. It only affects offensive ones, unlike the sun ring. The sun ring is better but if you wanna boost your damage slightly more with offensivem iracles be my guest