Enemy - Changeling Dragon

In my D&D campaign, The Changeling Experiment, there was a bizarre cult that performed transformative experiments on members of the Changeling race (white beings who can turn into other races) in an attempt to turn them into shapeshifting monsters that would dominate in combat and do their command. However, The adventurers who find the cultist hideout accidentally awaken the experiments early.

The Changeling Dragon is by far the most regular of the experiments, and is the only Standard-type minion, meaning that it has a normal health meter instead of dying in one hit, like a Minion-type. However, due to lacking a face, it can't attack with certainty and can only clumsily bludgeon something.