Forum:Royal Command VS Gaurdian Sphinx

I read somewhere that the effect of Guardian Sphinx is not negated by the effect of Royal Command because Guardian Sphinx is not a flip effect monster. Is this true? Up till this date I have never negated the effect of Guardian Sphinx while Royal Command was active, I got some stick for it but I always believed if a card stated "FLIP:" before its effect description that was a flip effect monster. If I am wrong fair enough at least I know now.

J20Hawkz (talk • contribs) 16:28, August 13, 2013 (UTC)