Quote from Froglord;884971:
They're only good for their freeze effect, their special breath skill misses half the time.
It's never missed for me. Contrarily, it's the best one because it loads much faster than the other dragons. Thunder Dragons have the worst area effect, and Fire Dragons have a screwy animation that makes the explosion time unpredictable.
Quote from Spaghedeity;885322:
Thunder dragons are better for melee in my opinion. Ice dragons remove all stun, which can screw you over sometimes if you WM/Smash and you're still in the animation follow up as they unfreeze.
Learn to time things and not just herpderp around? I ALWAYS get 2 Smash/Windmills in whenever I summon my Ice Dragon, and I don't even main melee.
Bad thing about Crystal Deer/Thunder Dragons is that their summon effect counts as a melee hit. Meaning if anything has Melee PD, or is in knockdown/recovery, they'll bounce up and attack right away. Bad for both melee, and any party members close by.