Flail Head (Acid)

Flail Head Acid is needed to create the Flail of Ages +3. but with one or two heads, you can forge an incomplete version of the Flail of Ages too. This head adds acid damage to the flails, which is handy to kill trolls. This item appears in Baldur's Gate II: Shadows of Amn, but it's not known where this item can be found exactly in the De'Arnise Hold.

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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."