Aboleth

The monster can breathe air and water.

If the monster fails a saving throw, it can choose to succeed instead.

If a creature the monster can see communicates telepathically with the monster, the monster learns the creature's greatest desires.

If destroyed, the monster gains a new body in days, reviving with all its Hit Points in the Far Realm or another location chosen by the DM.

While underwater, the monster is surrounded by mucus. Constitution Saving Throw: DC 14, each in a - Emanation originating from the monster at the end of the monster's turn. Failure: The target is cursed. Until the curse ends, the target's skin becomes slimy, the target can breathe air and water, and it can't regain Hit Points unless it is underwater. While the cursed creature is outside a body of water, the creature takes damage at the end of every 10 minutes unless moisture is applied to its skin before those minutes have passed.

Melee Attack: +9 to hit. reach 10 ft. Hit: 2d6 + 5 bludgeoning damage.

The monster makes two Tentacle attacks and uses either Consume Memories or Dominate Mind if available.

Wisdom Save: DC 14. target: 60-foot radius, creature.

Intelligence Save: DC 14. target: creature. Failure: 3d6 psychic damage; success: half.

The monster makes one Tentacle attack.

If the monster has at least one creature Charmed or Grappled, it uses Consume Memories and regains.