Multiattack

The hundun can use its Motivating Babble. It then makes four Slam attacks.

Slam

Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 12 (2d6 + 5) bludgeoning damage plus 7 (2d6) radiant damage.

Motivating Babble

The hundun babbles incoherently at one creature it can see within 60 feet of it. The target must succeed on a DC 17 Wisdom saving throw or suffer one of the following effects until the end of its next turn. Roll a d4 to determine which effect happens.

Spellcasting

The hundun casts one of the following spells, requiring no material components and using Wisdom as the spellcasting ability (spell save DC 17): At will: create or destroy water, dancing lights, minor illusion, prestidigitation 3/day each: black tentacles, fabricate (as an action), irresistible dance 1/day each: creation (as an action), plant growth