"The Will of Ashan" - "Heart of Darkness" [2nd campaign, 5th mission]

Since Arantir won't be available, it's not all that bad. His special ability is great. And is the "Ultimate Ability" even better, or is it the same? It's a shame that I never got to use his special ability; I never achieved it and never saw it in action, so I just have to imagine it.