|2 people marked this as FAQ candidate.|
There are a number of spells and class features that can be triggered in reaction to something that affects an ally, or even characteristics of an enemy. However, those effects are not always readily visible. Does a caster\character have to make a check to identify that the 'trigger' has occurred, or are they assumed to just know "because magic"?
As an example, the Bard spell Saving Finale states that as an immediate action the Bard can end her performance when an ally fails a saving throw, to allow the ally to re-roll the save. Many such effects aren't visible - for example, failing a saving throw versus Charm Person has no visible effect. Does the Bard have to make a Perception check or a Spellcraft check in order to use Saving Finale. or is it assumed that a Bard just knows and casts the spell? As a third alternative, is the spell useless in those situations where there's no way to identify that the ally failed the check?
Another example would be the Ranger's Favored Enemy (thanks Zhayne, that actually let's me extend the question a bit). Does it require some check for it to function, or does it simply take effect if the foe is a Favored Enemy (perhaps with the GM adding in the bonuses\extra damage if the enemy is disguised)?
Personally, I have always gone with the second option - the Bard just knows the ally failed "because magic", and the Ranger just fights more effectively against the enemy even if he hasn't identified it.