If your referring to the Deceivers ability it doesn't make the target automatically fail the test, it just makes them take one....and its been FAQ'd many a time that it Does work on fearless models.I'm not sure about that, even. . . It says that the target automatically fail the test, but fearlessness also prevents models from falling back or being pinning. As such, even if the fearless unit fails its test, there will be no effect. At least, that's how it seems to me. . .