Self-Sufficient (Mythic)
Independence comes naturally to you, and you have mastered taking care of yourself.
Prerequisite: Self-Sufficient.
Benefit: The bonus on Heal and Survival skill checks from Self-Sufficient increases by 2. In addition, you can expend one use of mythic power to treat a Heal or Survival check as if you had rolled a natural 20. You must decide to use this ability before making the roll.
Source: Mythic Adventures, p. 72