Why didn't Mousesack have to drink the water?
When Ciri and Dara entered Brokilon forest in The Witcher, the dryads were adamant that everyone who enters the forest has to drink the water of Brokilon. If they were of ill intent, the waters would kill them.
However in S1E05 the doppler guised as Mousesack enters the forest, claims to know Ciri and the dryads just let him walk away with Ciri without making him drink the water. Is this a plot hole?
Best Answer
The only two reasons I can think of that would cause the dryads to forego this security measure, are
because Mousesack obviously has no intention of staying, as he is just there to take Ciri back home ("I've come for the girl"), and Eithné insinuates the Waters of Oblivion are for those wishing to stay indefinitely:
"All newcomers in the forest must drink the waters. If they bear ill intent towards Brokilon, they die. If they're pure in heart, they survive, and may stay here".
and that they must have believed that there was no risk involved since Ciri vouched for Mousesack and was elated even to see him.
She introduces him, with Eithné and others close by, to her friend: "Dara, this is Mousesack, he's known me since I was born, he's like..", after which Dara grudgingly adds "..like family".
Noteworthy is that in the books, the Water of Brokilon is used to turn young girls into dryads.
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Why was Mousesack allowed in Cintra?
But what exactly was Ciri's relationship with Mousesack? Why did she trust him? She both allowed him to usher her away from her home and kingdom and was also relieved to see him after Cintra's fall (even if it was only a doppler version of the druid).Is Mousesack a mage or druid?
Mousesack (Polish: Myszow\xf3r), also known as Ermion, was a skilled and intelligent druid, and also a good friend and advisor to King Bran Tuirseach of Skellige, as well as Queen Calanthe of Cintra.Did Ciri drink the water?
Ciri did just that. Unlike with Dara, nothing happened after Ciri drank the water. Perturbed, Eithn\xe9 took Ciri to Shan-Kayan, a large tree in the center of Brokilon forest. She cut into it and told Ciri to drink from the source.Why Didn't You Stop Me?
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Answer 2
Joachim gives two satisfying answers already. However, I would also add that Mousesack is not a mage but a druid and traditionally the druids have a lot closer relationship with nature and do themselves tend to live in confined groups away from modern human civilization.
I don't quite remember from the books if there is a direct friendship between the druids and the dryads, but it doesn't seem far to imagine that the dryads would at least have a lot more trust in a druid to begin with.
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