Vork

Transformation: If the Vork is reduced below 30 hit points, it transforms, loses its Plant identifier and becomes a Monstrosity. In addition, it gains the following:

• It's wings gloss over and harden, giving it resistance to all physical damage.
• It's legs extend and expand, changing its size from Small to Medium.
• It gains the ability to spit acid, as described in the Actions section.
• The Vork becomes a CR 2 monster.

Bite: Melee attack, +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage.

After Transformation

Bite: Melee attack, +7 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) acid damage.

Acid Spit (Recharge 5-6): The Vork spews a line of acid up to 20 ft. long that then splashes in a 5 ft. radius circle. Each creature in the affected area must make a DC 15 Dexterity saving throw, taking 14 (4d6) acid damage on a failure and half as much on a success.