Strange Ox can use his acid attack.
Description
This creature's attack deals additional 4d8
Acid damage and may inflict Paralysed.
Condition: Paralysed
Duration: 1 turn
DC 15 
Constitution saving throw
- Cannot move or take
Actions, 
Bonus actions, or 
Reactions. - Automatically fails all Strength and Dexterity saving throws.
Attack rolls against the creature automatically succeed.- Any Attack roll made against this creature by an attacker within
3 m / 10 ft is an automatic Critical Hit.
How to learn
(Information not yet added.)