1. Attention to detail. A transcriber must be constantly re-reading as they're typing to make sure they didn't miss anything.
2. Google skills. Like most modern workers, a good transcriber needs to be an experienced Googler.
3. Grammar skills.
4. Typing.
5. Strong listening skills.
6. Fast and accurate typing skills.
7. Language skills.
8. Familiarity with MS Word or similar applications.