The Raid in Aberon was an attack carried out by Galbatorix's Black Hand. Their mission was to assassinate high Varden leaders.
The Attack[]
Drail, a magician working for the Black Hand, attempted to assassinate Nasuada by throwing a poisoned dart through an open window in her quarters. However, Elva rushed to her aid and managed to protect her from the oncoming missile.
Counterattack[]
Acting on information provided to them by Elva, the Varden swiftly infiltrated the building in which Drail was hiding. He committed suicide to avoid being captured.