A sample complaint that counsel may use to commence a civil lawsuit in an Ohio court of common pleas. Generally speaking, a complaint can be amended at any time.Plaintiff will need to make a motion with the court, requesting leave to amend. This form is available on Westlaw. Easily search more than 600,000 legal forms to find the exact form you need. CAUSES OF ACTION as set out in the Master Complaint: 1. (Provide the COMPLETE address of premises, including e.g. CAUSES OF ACTION as set out in the Master Complaint: 1. Civil law suits generally begin when someone files a complaint with the court. These forms must be filled out and submitted to the Clerk of the Court together.