Axolat

Regeneration. The Axolat regains 5 hit points at the start of its turn unless it takes fire damage, acid damage, or is incapacitated.

Magic Resistance. The Axolat has advantage on saving throws against spells and other magical effects.

Innate Spellcasting. Axolat's innate spellcasting ability is charisma (spell save DC 13, +5 to hit with spell attacks). It can innately cast the following spells:

At will: dancing lights

1/day: Invisibility, misty step
3/day: absorb elements

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: (2d4 + 3) piercing damage.

Tentacle Whip. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: (2d6 + 3) bludgeoning damage. When a creature takes this damage it must make a DC 13 Dexterity saving throw or become grappled.  Only one creature can be grappled this way at a time.

Chomp.  The Axolat may make a Bite attack as a bonus action on a a creature it has grappled.