As you discuss your tactics, Nafisa turns into a dryad with the face of a wailing banshee and screams: LEEEEEEEEEEEEEEEAVE!

You can see a ripple next to an open barrel of mead, and another arrow flies at Clover, hitting his leg. A numbing pain extends from the wound, trying to spread.

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DC 13 Fort or have your speed reduced to zero as your legs transform and take roots.