Wheels of Prophecy is a mod for Baldur's Gate II original or the Enhanced Edition. Wheels of Prophecy is a smallish mod that tries to add a bit more nonlinearity and roleplaying opportunity to the Throne of Bhaal expansion, mostly but not entirely centered around chapter nine. In summary, Wheels of Prophecy doesn't change the events of Throne of Bhaal (not much, anyway), but it does let the player interact with them in a much more flexible way.
Not sure but it seems that
balthazarshould be replace bybalthin: https://github.com/Gibberlings3/WheelsOfProphecy/blob/d4821d720f6b65d909547ca02bd73c6741913909/wheels/dialogues/abazadd.d#L52 https://github.com/Gibberlings3/WheelsOfProphecy/blob/d4821d720f6b65d909547ca02bd73c6741913909/wheels/dialogues/abazadd.d#L53