Twists are nice, but they're primarily useful in the here and now. Here's a way to throw a monkey wrench into the gears and pull of a retroactive Xanatos Gambit.
Plot Immunity (That Wasn't Me): Pick a point in the past. Whatever you did, whatever happened, it wasn't you. That was a clone, a lookalike, surgically altered, wearing a spy mesh, whatever it takes. The larger your PI score, the more involved stuff you can wave away. (Note that in certain circumstances using this particular brand of Plot Immunity will get you the complication "Wanted for questioning by The Eternal Masquerade," as any Masqueraders should have been able to tell whether it was you or not.)
Plot Immunity (Just What I Needed): Whatever your opponent just did, it turns out to be the key to your secret plan. They blew up the star you're next to? Luckily your Skotadi allies had an energy collector ready to absorb and rechannel. They beat you in the presidential race? That just frees you up to pursue your real goal. No serious loss, and they're mired in bureaucracy. The down side to this descriptor is that you need to be able to follow through on the plan, or the GM can charge you an extra Complication for having an extra-cheesy descriptor.
Intrigue (Unreliable Sources): Used to foil an attacker's actions against you. They start a smear campaign? Their info is laughably wrong. They take you on in politics? They're arguing over things that are non-issues to your constituents. Your opponent's carefully laid plans rely on things that are total crap.
Empathy (That Was Just Pillow Talk, Baby.): Undoes any relationships you might have formed with someone, for better or worse. Water under the bridge now. (Yes, that's an Army of Darkness reference.)
Magnetism (Wink and a Nod): When you insulted the planetary governor last month? He knew you had a secret plan up your sleeves. This works for Empathy as well, but Magnetism has the bonus that you can use it on all your followers as you convince someone else that you're betraying them.
Comprehension (Supervillain Identification Technique): No, no, all of it makes sense. See? It's all this one guy. He's been playing us for chumps. Now that we know where he is, we can stop the interplanetary war, the muon phase-shift problem, and the artistic crisis all at once. (The down side: this only works when you're up to your eyeballs in trouble.)
GMs, if lots of your players start taking these kinds of descriptors, beware the Thirty Xanatos Pileup.
