Retributive Invisibility

Obsidian has not yet confirmed the existence or non-existence of this invocation in NWN2.

Retributive Invisibility
The invoker is invisible, even if he/she attacks. If the invisibility is dispelled, all creatures in a 20’ radius burst around the invoker take 4d6 sonic damage (Fortitude save ½) and are stunned for 1 round (Fortitude negates).