What highwaymen are to roads, river rats are to waterways. Skilled at hiding amid reeds and roots, these rogues strike the unwary from the shallows as others would from the shadows. Despite their strong association with banditry, river rats also make excellent guides and hunters.
At 1st level, a river rat gains a bonus equal to 1/2 her class level on Swim checks (minimum +1).
A river rat ignores difficult terrain caused by light undergrowth and shallow bogs, and it costs her only 2 squares of movement to enter a square of deep bog or heavy undergrowth, rather than 4 squares of movement.
This ability replaces trapfinding.
This bonus increases by 1 every 3 levels thereafter, to a maximum bonus of +6 at 18th level.
This ability replaces trap sense.
Pathfinder Player Companion: People of the River © 2014, Paizo Inc.; Authors: Tim Akers, Jason Brick, Ethan Day-Jones, James Jacobs, Nick Salestrom, David Schwartz, and William Thrasher.