You summon a razor-sharp ice spike near you, impaling an enemy and possibly freezing them in place.
On success, the target takes 29 cold damage and has 35% chance to gain freeze on hit for 3.5 rounds.
Abilities belong to classes and can be used by players and NPCs. Most abilities must be learned first, and some become stronger when you invest points in them. Ability scrolls let you use an ability a limited number of times, even if you have not learned it.