Age of Conan - Class Preview @ Official Site

Funcom's Age of Conan site has their latest class preview, covering the Herald of Xotli:

Some of those who meddle in the demonic arts are either too weak-minded or venture too far down the path of demonology to remain untainted for long. The Heralds are those who with an insatiable lust for power regardless of the cost have bargained with the demon god Xotli and paid the ultimate price.

They become a host to true demonic forces, allowing their very flesh and blood to be twisted and shaped to the purposes of their master.