
I just wanted to point out what appears to be a misconception with this clock. From the artwork and flavor text, it is "broken but reliable" and the way the game handles this is once its played it does a different action in a 4 turn cycle.
Turn 1: +3 to next skill test. This starts during your turn, meaning this cannot be used on a mythos phase test. Turn 2: Move up to 2 spaces. Edit: As Zin said below this is not an action and so does not provole AOO. It is hence two free shortcuts you can use right then (but not stock). You may move up to twice immediately after your turn begins, but if you don't move right then it's lost. Turn 3: Gain one action this turn. Turn 4: Gain 3 resources.
And then it repeats until scenario end. It gives very powerful bonuses all in all, and they come at predictable times (reliable) but the clock is broken: you can't make it do what you want when you want it.
Unless you have an eldritch sophist.