Technically they should still be able to act if they given an action via a Talent like Impel Ally. Also technically this would prevent the second power used with Linked Power from being activated, which means they would lose that use of the power until recovered.
Since these talents got mentioned, I´d like to ask how it works with all three of the action-giving talents? (Trust, Fortune´s favor, Impel Ally)
Fear states that the target can take only one Standard (or less, but for simplicity´s sake, let´s stick with the basic effect for the examples) on its next turn.
Impel Ally should be available, since you take the granted action immediately, not on your turn.
Fortune´s favor gives you a standard action you have to take before the end of your turn. With a critical hit on AoO, you can take the extra Standard action before you start your turn. If you wait for your turn or get that crit during your Standard action, however, the extra Standard action is wasted. You get an extra Standard action, but you can take only one during the turn.
Same goes for Trust: You get an extra Standard action, but only on your turn, and since you´re allowed to take only one Standard aciton by the effect of Fear, the extra one is wasted.
Do I read that correctly? Or do the extra actions go on top of what Fear allows you no matter what? Or does it depend on the order of receiving the effects (Fear reduces you to one Standard, then Trust gives you another, so you have two VS Trust gives you extra Standard action, then Fear reduces you to single SA, so you have only one)?