You gather darkness and fling it at an ally in need. Once the shadows have done their job, they leap again to hide another ally.

Encounter   ✦     Arcane, Nethermancy, Shadow
Immediate Interrupt      Ranged 10

Trigger: You or an ally within 10 squares of you is hit by a melee or a ranged attack.

Target: The character who was hit

Effect: The target gains partial concealment until the end of his or her next turn.

  Aftereffect: One ally within 5 squares of the target gains partial concealment until the end of his or her next turn.

Published in Heroes of Shadow, page(s) 105.