At the beginning of combat, you may attack once in response to being hit.
Prerequisite(s): Al Bhed, Spring Loaded, 3 ranks in Knowledge (engineering).
If your Spring Loaded feat has not yet been activated, the first successful melee attack against you triggers an attack of opportunity against the foe that attacked you. This attack of opportunity does not count against your limit per round. This effect expends the use of your Spring Loaded feat.