Your survival skills step in to support an ally.

Encounter
Immediate Interrupt      Personal

Trigger: An ally you can see and who can hear you makes an Acrobatics, Athletics, Dungeoneering, Nature, or Perception check and dislikes the result.

Effect: Make a Dungeoneering check. The triggering ally can use the result of your check in place of his or her own result.

Published in Into the Unknown: The Dungeon Survival Handbook, page(s) 57.