The spirit-speak power scroll is the only way to unlock higher spirit-speak skills and reach maximum damage with a Necromancer. A UO 120 Spirit Speak scroll is the only way to unlock the caps on your skill so you can gain further past 100. Spirit Speak is the damage modifier for necromancy. At 120 SS you can do maximum skill-based damage with necro spells and talk to the dead. As a ghost, this allows whatever you say to be seen and not rewritten as "oo0o0ooo0o" meaning you can still talk to the living.