Originally Posted by
The Madgod
Not really. If you're intelligent enough to be a caster, you would be able to transfer the skills it took to move rock as a shaman to a different medium, in the case of Gul'dan, warlock magics. There needs to be some changing of how its done obviously, since shamanism and fel magic use two different types of casting, but it can be done.
It's like being an engineer. If you know how to do something, you could potentially make something else that does the same thing, or roughly the same thing.