Cloud Dragon is just not as useful as other dragons.
Cloud Dragon. Its not as good as the other dragons. The only thing that it helps is accelerate Rotating. Its hard to rotate when you are losing and the other dragons are all stronger. Personally I think that Cloud Dragon shouldn't be a Situational Buff as much as it should be a Consistent Buff, like Water, Earth, and Fire Dragon.
Water Dragon will heal you during team fights. Fire Dragon is always increasing your damage. Earth Dragon is always active when taking objectives.
Why is Air Dragon the only Dragon that is only helpful when you ARE NOT doing anything other than walking. If you attack or get attacked. Boom Air Dragon completely useless.
Overall, hands down I don't think anyone can say that Air Dragon is better for any type of comp.
Split Pushing: Earth Dragon Team fighting: Fire Dragon Sustaining and Poking: Water Dragon A Mix of complete and random garbage: Fire Dragon/Water Dragon Taking Objectives: Earth Dragon
What is 30/45/60 Movespeed going to do when you are trying to take a tower, and just have auto attacked the tower and got collapsed upon, take a second to give you the move speed to maybe get away.
What is Air Dragon going to do when you are fighting a full blown Team fight, nothing because you are in combat. What is air dragon going to do when you are taking poke and poking back, nothing because you are in the general area you don't plan on leaving, maybe will help you avoid 5-6 skill shots. A Mix of complete and random garbage nothing because if you are watching a team play like garbage, then they don't know how to fundamentally utilize the buff Taking Objectives, yes because that 30/45/60 movespeed is Very good for taking objectives as a team, probably the best buff for... oh wait, Fire and Earth dragon are better for that.
Now if you want to make Cloud Dragon useful; remove the "When out of combat" text from it. Make the buff another pair of boots. Make the dragon worth value. Essentially. Cloud Dragon should then be equal to a fire dragon. Because if you get 3 Cloud Dragons you have increased movespeed by 60 all the time; you may even be able to get away with selling your boots for more damage, or defensive purposes. Saying you get three cloud dragons.
But @riot, I do personally believe that cloud dragon needs something done to it.
I do also understand that already fast champions like Udyr (biggest offender of this, if it were to go through) would be impossible to catch.
But, the dragons should not be lope sided, champions can be because you are consistently nerfing and buffing them.
We shouldn't make one weaker than its counter-parts.

are a useless item. But they're actually not. Moving around the map has lots of uses (including placing and clearing vision). How many fights are decided (or don't happen at all) because one player couldn't get to them in time?