I've been playing the game for a while, and just recently started a new character; a FOmarl. Those supposedly get a 1.5x boost from using the technique, Grants, so I started hunting for it. Problem is, in none of my characters have I ever come across a single grants disk... My highest level is only 62, but still. Considering I'm in Very Hard, I would have expected to find at least one of the little devils by now.
Can anyone shed some light on why I can't seem to find one, or maybe render aid in getting it? Is it a rare drop from a specific monster or something?