You leap out of harm's way just in time to avoid an attack.

Encounter   ✦     Martial
Immediate Interrupt      Personal

Prerequisite: You must have training in Athletics.

Trigger: An enemy targets you with an attack.

Effect: You jump, making an Athletics check with a +5 power bonus.

Update (10/3/2011)
Updated in Class Compendium.

Published in Player's Handbook, page(s) 124, Class Compendium.