Act 3 gives the party an important choice regarding the city's underworld. Players can either support the established Guild led by Nine-Fingers Keene or side with the Zhentarim, a ruthless mercenary group attempting a takeover. This conflict is just part of the Stone Lord narrative, where the ranger Minsc is manipulated by the game's primary antagonist, the Absolute. Either way, the party has to make a decision at the end of the Aid the Underduke quest, and while it seems like there's only a moral result, there's more to it.
Roah Moonglow, one of the best merchants, leads the Zhentarim to set the stage for the Guildhall uprising against Nine-Fingers Keene. While operating in the shadows, the Guild displays a certain code and concern for the city's well-being under Nine-Fingers. Zhentarim, on the other hand, prioritizes its own gain by employing violence and manipulation without hesitation. This comes to a climax beneath the city in Act 3, and the city needs an underworld, so the player has to choose a side. However, seems to reward players more for one side than the other.
Zhentarim is clearly the evil playthrough option, as there's not much redeemable about the group. However, if players help the Zhentarim take over the guild hall in, they get the group as allies in the final battle against the Absolute. Specifically, this gives players two elite assassin mercenaries from the Zhentarim's ranks to summon during the final battle. These mercenaries look different from the guild members, but it's a similar outcome as siding against the Zhentarim. The main benefit is that evil parties can side with the morally corrupt side.
Baldur's Gate 3 is almost a different game after seven patches, adding in features like mod support, but one important feature is still missing.
If Roah died earlier in the game, then Friol will be the one leading the organization. Roah or Friol will pledge every agent they can to the player, but it just ends up being two agents during the fight. It
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