Blank pages are slow. They're also expensive — every hour you spend staring at one is an hour you're not doing the work you're actually good at. The Creative writes in your voice, so you edit instead of invent.
You need a newsletter, three social posts, and a follow-up email to a prospect, all by end of day. You give the Creative the context. It comes back with four drafts that sound like you wrote them on a good day. You read, tweak a line or two, hit send. Total time: 15 minutes.