The Druid's Wild Shape class feature states, in part:
[…] If the creature has any legendary or lair actions, you can’t use them.
I do not recall ever seeing any creatures with Legendary or Lair Actions that were also eligible for the Druid's Wild Shape feature, even up to the 20th-level Moon Druid's selection of CR 6 beasts.
Do any such beasts exist in official publications, such that this rule would need to be applied?
Best Answer
There are currently no eligible beasts with Legendary or Lair Actions.
It must be the case that this rule exists as a future-proofing measure and reminder, as it echoes the "Legendary Creatures" section of the introduction to the Monster Manual, which states:
There are currently no CR 6 or lower beasts with Legendary or Lair Actions. These searches on D&D Beyond would return any eligible creatures, but yield no results:
And finally, the moon Druid’s elemental forms also lack Legendary and Lair Actions.