One of the immortals reacted slower than the others, and he got hit a bit by the green flame.
His shoulder started catching on green fire and he started screaming for help.
"Help- my arm became numb and I can't move it at all!"
The immortal who launched the green flame earlier realized that the cloud wasn't a neutralizer.
His green flame actually had an effect to make limbs go numb and spread poison through burning skin-
And now this dragon is using the same technique as his green flame technique! The green flame also had the same effect as his flame.
Before he could warn his immortal friends, his friends already launched their attacks and those fluffy clouds absorbed their attacks easily.
Then Gary started devouring the clouds in one go, while Theo summoned a new batch of fluffy clouds around them.