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After Minsc takes Aerie as his witch can you trade her for another NPC and not lose Minsc in the process??

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Not all chemicals are bad. Without chemicals such as hydrogen and oxygen,
for example, there would be no way to make water, a vital ingredient in
beer.

- Dave Barry

Ooh, I hadn't tried that. I would, but unfortunately I'm not in an area where I can pick up a new character. If you are in an area where you can do that, you might want to try saving your current game under a different name and try dropping Aerie and see what happens (then you could get back to the rest of us).

Then again, I'm almost certain someone will pop up soon with an answer to your question and you won't have to go through it.

Barbara

I've done that before, just to test that very question. For me, he did not leave.

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"The dreams of a people became the promise of republic, the success of a society, and the transgressions of an empire."
- When the Sun Set on SPQR

He won't leave. Its just one of those quirky NPC interactions. The only consequence of him making Aerie his witch is that when Aerie gets heavily wounded/killed he goes nuts and says something about protecting his witch, then tosses himself into battle to protect her..

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Why?

It stems from his guilt over losing his old witch, Dynaheir who ended up dying when he was trying to protect her ( bg-1 i think). So he makes Aerie his new witch,

Every now and then he does that with Mazzy. Weird..