You enrage an enemy by mocking its failure.

Encounter   ✦     Martial
Immediate Reaction      Close burst 5

Trigger: An enemy within 5 squares of you misses you with an attack.

Target: The triggering enemy in the burst

Effect: Until the end of the encounter, the target takes a -2 penalty to attack rolls (including rolls against you) until it hits you with an attack.

Published in Dragon Magazine 399.