RARITY

Creatures, items, traps, hazards, special abilities, and many other things can be common, uncommon, or rare.

Attempting to learn information about uncommon and rare targets have DCs that are 5 and 10 points higher than normal (respectively).

When uncommon and rare abilities and traps are used against you, their attack rolls/DCs are 2 and 4 points higher than normal the first encounter they're used against you. This bonus is halved thereafter.

If you have a specialty against something or successfully succeed in an Analyze attempt against it, you treat the target as common instead of uncommon or rare.