ad 4) I'm so fucking stupid, I forgot that you are unaffected by Perish song and thought that both you and the imposter will die to it xD So the problem is nonexistant and you don't need Shed Shell. Dankinium Z is always a nice option on a Parting Shot user.
I even run Switcheroo with a Choice Band on my unaware Gyarados (Pursuit, Spectral Thief, Switcheroo, Shore up), because the band ensures the OHKO with Pursuit against opposing MMYs when they switch out and thanks to switcheroo it is a guaranteed stop to Normalize Gengars.
I even run Switcheroo with a Choice Band on my unaware Gyarados (Pursuit, Spectral Thief, Switcheroo, Shore up), because the band ensures the OHKO with Pursuit against opposing MMYs when they switch out and thanks to switcheroo it is a guaranteed stop to Normalize Gengars.