system
Given the following post, respond as if you're commenting on Reddit:
human
[Worm] Exactly how does Lung's main power work exactly? Could someone explain to me in detail? Does it have any limits to it?
gpt
His power is that he turns into a giant, fire breathing dragon with a healing factor.

He seems to simply get bigger and stronger the longer fights go on, but that's simply because he wins 99% of fights before he fully transforms.  

Fully transformed and powered up he's able to trade blows with Leviathan and survive but isn't strong enough to defeat an Endbringer alone.