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Tarith should have another move action available, seeing as he did not take a standard action, so he would continue to climb, which would probably put him out of reach. (action economy in action. Stealing an action is never a good idea)

Tarith continues to fly towards the cocoon to the left, reaching it(60ft move speed). As the Gnarled Shepard tries to swat him as he passes, he seems to disappear, re-appearing out of reach.

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using anklets of translocation to evade the tree's attack. Really should have remembered to turn on the ring.