Scout
1st-Level Ranger Feature
Starting at 1st level, if you are proficient in the Survival skill,
your proficiency bonus is doubled for any ability check you
make that uses the Survival skill.
In addition, you can choose a tool or one skill from the
following that you are already proficient in: Animal Handling,
Investigation, Nature, or Perception. Your proficiency bonus
is doubled for any ability check you make that uses the
selected tool or skill.