Stronger spells sometimes take more than a single attunement slot to equip. If I'm using a pyro glove I usually like to aim for 16att, which gives me 4 slots iirc? Anyway, that lets me use great combustion, great. But it doesn't. You're probably referring to the number of slots they take up. It says it scales with intelligence. it is upgraded with souls by one of the 2. best stats for pyromancer dark souls. The pyromancy flame lies to you in game. .