Attunement is a character attribute in Dark Souls 3 that determines the number of attunement slots or amount of spells you can carry at the. By increasing the Attunement stat (at 14 or so you get an additional slot, and so on and so forth). Alternatively, there are two magic rings you. For Dark Souls on the Xbox , a GameFAQs message board topic titled "How do i get extra spell slots?".