I am not a lawyer : But I would highly advise against using it with WoW or any blizzard product unless there is an explicit license between Nvidia and Blizzard.
Cloud Computing: Use the Platform, including a Game, in connection with any unauthorized third-party “cloud computing” services, “cloud gaming” services, or any software or service designed to enable the unauthorized streaming or transmission of Game content from a third-party server to any device.
We’d only be able to offer you what our EULA says in regards to cloud gaming platforms. Sorry, but we won’t be able to provide anything more specific than that.
License Limitations. Blizzard may suspend or revoke your license to use the Platform, or parts, components and/or single features thereof, if you violate, or assist others in violating, the license limitations set forth below. You agree that you will not, in whole or in part or under any circumstances, do the following:
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V. Cloud …