You adjust to the shifting battlefield to position yourself where you can resume your bloody work.

Encounter   ✦     Martial
Immediate Reaction      Personal

Trigger: An enemy within 5 squares of you that you can see moves willingly.

Target: The triggering enemy

Effect: You shift half your speed and gain combat advantage against the target until the end of your next turn.

Published in Dark Sun Campaign Setting, page(s) 51.