Athletic (Mythic)
You excel far beyond others at acts of physical prowess.
Prerequisite: Athletic.
Benefit: The bonus on Climb and Swim skill checks from Athletic increases by 2. In addition, you can expend one use of mythic power to treat a Climb or Swim check as if you had rolled a natural 20. You must decide to use this ability before making the roll.
Source: Mythic Adventures, p. 60