Climbing.
Ability Score(s): Power + Agility
Usage: This is used to climb surfaces, with or without the help of rope. Having a Climb speed instead makes the skill function as Sprint, increasing your Climb speed by its amount instead.
The base DC is 25 to climb 2 squares, for every 5 points you bypass the DC by you increase this by an additional 2, to a maximum of your regular land speed.
Climbing with the help of a rope grants you a +10 bonus to the skill check, and increases the climb speed on a successful by an additional 2 squares.