User blog comment:Ion Eduard Andrei/Monstrous nightmare vs Thunder drum/@comment-3117252-20140702044715

nightmares have the ability to swim and its unknown how long hey can swim underwater

nightmares are very powerful dragons that shown to able to lift heavy loaads so they can throw them if their size of thornado easily as shown hookfang can throw toothless

they have incredible speed against the thunderdrum

nightmares have shar fangs, claws, and talons that can do some serius damge to try to sctrach it

having great endurance and stamina on their side against thunderdrum they should win

having hidden ability wing blast will help out to push them back since the book said thunderums weight is 90lbs which i do doubt they can send them far distnace.

so i say nightmare will win