[WaifuApple]

Back on G6, the Zera (bone guy) prayer tools gave you dark attack and critical chance. For some reason this, while a stretch, makes it not the first time darkness and critical attack have come together with ties to bones.

I dunno if it does much for the fact that you're probably not critting with most tomes, but there tends to be a lot of "hey look, basic attack with me" stuff on tomes anyway.