Are there any beasts eligible for the druid's Wild Shape feature that have Legendary or Lair Actions?

Question

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?

Answer 1

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:

If a creature assumes the form of a legendary creature, such as through a spell, it doesn’t gain that form’s legendary actions, lair actions, or regional effects.

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:

• Beasts with Legendary Actions
• Beasts with Lair Actions

And finally, the moon Druid’s elemental forms also lack Legendary and Lair Actions.