Abraxus affair

The abraxus affair refers to the attack on King Azoun IV by an abraxus, a magical golden bull-like creature in 1369 DR. The king was hunting in the forest with his cousins Baron Thomdor and Duke Bhereu, and Aunadar Bleth, when the creature sprung unexpectedly from an abandoned ruined elven watch tower, giving off poisonous gas as it attacked. Although the group were able to inflict enough damage to the creature in order to disable it, Azoun, Thomdor and Bhereu all succumbed to the poision, falling into a coma-like state. Aunadar was unaffected.

Diagnosis
The remains of the abraxus were brought back to the royal palace for examination by Laspeera Inthré and Emthrara Undril. Lord Dimswart was able to discover that the affliction was a venom that spread a blood disease resistant to conventional magic, causing internal organ damage.

Unofficial name
The event in question was not officially named, but has been unofficially named for convenience. The name used here is one of two used by Jerome Davis in his "Nobility of Cormyr" posts on the Wizards mailing list.