Shell Defense. Abetzi can withdraw into her shell as an action. Until she emerges, she gains a +4 bonus to AC, and she has advantage on Strength and Constitution saving throws. While in her shell, she is prone, her speed is 0 and can't increase, she has disadvantage on Dexterity saving throws, she can't take reactions, and the only action she can take is a bonus action to emerge from her shell.

Hold Breath. Abetzi can hold her breath for up to 1 hour at a time.

Trident. Melee Weapon Attack: +5 to hit, reach 10 ft., 1 target. Hit: 5 (1d6 + 2) piercing damage, 6 (1d8 + 2) if using two hands. RangedWeapon Attack: +5 to hit, range 20/60 ft., 1 target. Hit: 5 (1d6 + 2) piercing damage.