This skill is required for anyone wishing to learn celestial magic spells or cast Battle Magic scrolls. It does not allow you to read Ritual Magic scrolls.
With this skill, a character can use Battle Magic scrolls up to the character’s highest level of celestial spell ability plus four. Thus, if you have the skill Read Magic and have no celestial spells, you can use up to and including 4th level scrolls. If you know one celestial spell level, you can now use scrolls up to and including 5th level, and so on.
To use a magical scroll, you must actually hold the scroll before you, have enough light to be able to read it, actually read the scroll, say the verbal incant out loud, touch the spell packet to the scroll, and then throw the spell packet.