Trigger Deploy on Successful Unrelated Build

I've got a Build Plan that is doing some environment orchestration (e.g. restore database to previous state), and I'd love to be able to trigger a deployment to a specific environment on successful completion of this build. The deployment is associated with another build that produces deployable artifacts, so this orchestration build is technically unrelated to the Deployment Plan.

The workflow would be as follows:

1. On regular schedule, run orchestration build against QA1 environment to reset the environment
2. If Build Plan fails stop processing
3. If Build Plan succeeds, trigger deployment to QA1 environment

If I configure the Deploy environment with the orchestration I am required to run the orchestration each time I want to deploy new artifacts, which is not always the case. Likewise, if I put the deployment in the Build Plan I lose release tracking of that environment provided from the Deploy management.