Calming Stroll was part of the legacy skill tree and was removed in the Frozen Trail (2.0) update. See the current skills.
Calming Stroll
Mobility
Description
While walking, your stamina regenerates as if you were standing still.
Effect
Stamina Regeneration
Known Values
also triggers when ADS-ing
Max Points
1
Requirements
Required Skills
Point Requirement
15 points in Mobility