Question: How do vampire special abilities work?

Question: How do vampire special abilities work?

Question: How do vampire special abilities work?

Example: A vampire PC uses Terrible Power! Stress spent. At that point, does the narrative description happen, or is a appropriate skill rolled (and the use of terrible power allows it to be rolled where a human could otherwise not have been able to do said roll at all)

Example 2: Arcane Sight is used! does this just happen, or is an appropriate skill roll again paired with it.

Example 3: Void Echo is used! Does the vampire have to roll prowl, or does the super stealth just happen?

Answer would be most appreciated.