This custom query widget will display any alerts which have logic reliant upon Custom Properties.
[embed:6b06e1a7-0ec1-4e43-9421-8caaf95469b6:ea1bb739-8e34-4ee1-b34b-6a53f1b0dc76:message=Please%20note%20this%20query%20does%20not%20directly%20identify%20the%20Custom%20Property%20Type%2C%20Name%2C%20or%20Value.%C2%A0%20You%27ll%20have%20to%20investigate%20the%20details%20yourself.&type=warning]