Pottermore Book 3 Chapter 20 Walkthrough

In moment 1, you can unlock Werewolves.

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Pick up some Dittany.

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In the second level of zoom, pick up the Monkshood.

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Pick up some Wormwood.

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In the second level of zoom in moment 2, pick up some tubeworms.

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Pick up the Spine of Lionfish.

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Pick up the pebble.

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