The ubiquitous scroll cannot be used by anyone other than an experienced Wizard. Recorded on the scroll is a single use of a spell that can be cast at any target that can be seen (a ranged spell). Once the spell is cast the scroll becomes scrap parchment.

Scrolls that aren't used in a trial can be 'reverse-engineered' after victory in a trial, in order to add the spell recorded on the scroll to your library.