You attempt to beguile a beast that you can see within range [...]
I am having trouble determining what happens if the wild shape ends while the spell is still affecting the druid, namely:
It must succeed on a Wisdom saving throw or be charmed by you for the duration
According to this line one would assume that after being affected, the spell no longer cares whether the target is still a beast so the druid would continue to be charmed.
While the beast is charmed, you have a telepathic link with it as long as the two of you are on the same plane of existence. [...] (emphasis mine)
Now the part about the telepathic link specifies "the beast" so the link should perhaps be broken.
The worst part comes from the next paragraph that simply states:
You can use your action to take total and precise control of the target. [...] (emphasis mine)
I assumed that this action uses the telepathic link but that is not specified and is actually in a separate paragraph, so I have no idea how this would work.
Is there a rule I am missing or is this ultimately just up to the DM to decide how this interaction should work?
1 Sage Advice
@mikemearls @ChrisPerkinsDnD Druid uses wild shape, are they a valid target for dominate beast or dominate person? What about w/ polymorph?
2:37 PM - 18 Aug 2016
their type becomes beast, so they can be affected by spells according to that type
1:39 PM - 18 Aug 2016