Partial Shifting

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Prerequisite(s): Shifter, Con 13+
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Benefit: Spend one daily use of your shifting ability. For one hour you receive a +2 bonus on Balance, Climb, Hide, Jump, Listen, Move Silently, Spot, Survival and Swim checks. This feat only provides a bonus while in natural, outdoor environments. If this feat is used in an urban or indoor environment it has no effect.
 
Source: Unearthed Arcana