A: Generally, yes. A "verified" client means hash-matched to Blizzard’s original data. A "clean" client implies no server-specific patches have been applied. Many users download a verified client, then patch it manually for their chosen server.
A: No. The Pre-Legion event (Demon Invasions) was patch 7.0.3. Patch 7.3.5 includes Argus, the final raid (Antorus), and the post-Legion Silithus scenario. wow legion 73 5 client verified download
Servers like , Felsong , or LegionWoW often provide a download link directly on their website. The advantage here is that these servers have already verified the client for their player base. A: Generally, yes