The moment the Wildmother becomes Fjord's new patron is so good, because it really feels like a capstone on his arc so far.
Fjord entered the campaign with powers he didn't understand but a desire to learn about them, connected to an entity that was never clear about its intentions and was quick to resort to threats and control to direct Fjord in the way that it wanted him to. Uk'otoa never had any issues with compelling Fjord to do what he wanted, whether that was continuing to swallow blades so that they could be integrated into the Sword of Fathoms and compelling him to bind himself to a Cloven Crystal so that he could then bring it to a seal, stealing Fjord's agency was something Uk'otoa would often readily do if it was of benefit to him. Melora on the other hand not only presents her as a comforting presence to him, she's also very clear about what she can and can't give him and what she wants in return, and most importantly, she gives him a choice. She hears out what Fjord wants and lays out the obligations she has for him in return for what he asks, and he gets the choice to say yes, to give in to her and accept her patronage. Something he never got from Uk'otoa, whose service he simply woke to find himself in one day and whose terms he never got to negotiate for himself.
This also feels like a nadir point in Fjord's relationship with power as well. Because he stayed in Uk'otoa service as long as he did because he liked the powers it granted him and the ability to act he got from that. Even when being lead by Uk'otoa's desires those powers gave him a sense of control that he so often lacked so he clung to them. He clung so hard that, by his own admission after the theft of the Mistake, he forgot the things he could do that weren't granted to him by Uk'otoa. And he so relied on his powers to feel useful that Uk'otoa first temporarily taking them away from him terrified him and so when it happened a second time he resorted to extreme measures to try and get them back, making the choice to throw the Sword of Fathoms in magma only after Uk'otoa would not yield. He spends the time after breaking his pact both finding other ways to be useful to the group (using magic items in innovative ways, accepting Beau's offer to give him combat training that uses only his body) and stepping aside because he has nothing to add (in Gelidon's lair and the manor heist). He admits to Caleb while the Star Razor is being reforged that he's reached a point where he's not so much frustrated as curious how things will go, and that he wants to figure out how he can use the capabilities he has to help and not hinder. He very much still wants power and the capabilities it grants, he admits as much to Melora, and indeed seeks her out hoping its something she can grant him, but he seems to have developed a broader understanding of what that means. Power can mean magic, but it can also mean being clever and charming and wielding that can be just as important as wielding a sword or a spell.
While Fjord remains a warlock who loves the power being one gives him, both his relationship to power and his relationship to his patron have changed such that he understands the choices involved and was able to make them with open eyes, and they're as such so much more informed and holistic than the ones he had when he started all this.
