Gleranon's/Talesin's Packhearts.
Perhaps the general miasma and pollution of Orr weaken it? I imagine Oakhearts as being very in tune with the land, and Orr’s pretty nasty place to be in tune with.
~The Storyteller – Elementalist – Jade Quarry~
That does make sense. Then again, it begs the question: why use a Packheart for this? Why not an armored transport, charr tank, or a helicopter? If fuel is an issue, just use dolyaks or marmoxes. At least they will fight back.
“But Nilkemia, that would make it too easy!! Events must have a chance to fai-(shot)”