Yes, the more Chosen Mystra has, the less power she can wield directly.
However, the more Chosen she has scattered around Realmspace, the more stable the Weave (which is her!) is, because they help to anchor it, preventing severe ripples.
#realmslore
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Xyn Raven
@XynRaven
Replying to @TheEdVerse
Concerning Mystra, it's said that half her power lies in her Chosen and Azuth, which kept her from being the most powerful deity in all of Realmspace.
Does that mean the more Chosen she has, the less power she commands on her own, or do her Chosen bolster her power somehow?