Flail Head (Poison)

Flail Head Poison is needed to create the Flail of Ages +5, but this is the first head which needs to be added to Flail of Ages +3 in order toFlail of Ages +4. This head adds poison damage to the flail. This item appears in Baldur's Gate II: Throne of Bhaal, It can be found in Watcher's Keep at the second floor in the pool filled with poisonous substances. Because Watcher's Keep is available during the chapters Shadows of Amn, it's possible to make Flail of Ages +4, but it's not known if this is possible.

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"This is one of three flail heads belonging to Lord Arnise. Not all three heads are required to assemble the flail."