User blog comment:Skeith9/Heroic Spirits Speculation/@comment-50.159.54.248-20140721200933/@comment-50.159.54.248-20140721204904

The Grimorie is a lot like Prelatie's Spell Book, but offers Merlin a more generalized arsenal instead of just the summoning spells that the Prelatie's Spell Book has in it.

Spells most likely range from simple Single-Action, like energy bolts, simple curses, and minors spells, mostly in the E-C ish area.

To major rituals, summoning, and other grand magic on the levels of True Magic, what would probably make up the B-A++ area.