Warlocks.
Paladins only have it on a 45 second cooldown. Most bosses do a thing more often than once every 45 seconds.
I’m not going to sit here and type out the movement abilities of every class, because frankly, it’s irrelevant. You need to press move extremely often in raids, and certainly far more often than any class would always have some speed increasing cooldown available.
So does speed. Not every damage source works like a stick of dynamite where you are either in or you aren’t when it goes off.
Many damage sources work like fire—the longer you stand in the fire, the more damage you take. Fire is especially famous for working like fire. Lots of bosses do fire.
Let’s say you have absolutely perfect reaction time and click your speed cooldown. It still takes your character a non-zero number of seconds to move out of the fire. If you are faster, you will take fewer ticks of this damage before you reach a safe area.
And as I’ve already stated, sometimes enemies force you to move away or they move away. Wrathion likes to go to the other end of the room. If you run faster, you can get back to him sooner. Getting back sooner means you might get an extra swing or two in. Speed has interacted with your damage output by creating a sword swing that otherwise would not have occurred.
If you move faster in the world, you can do more quests.
+5 quests per hour.
A number happened. Power increase.
Even with your extraordinarily narrow understanding of power, that is provably not true. Your obsession with hard power is silly.
Beyond what I’ve already demonstrated, there are softer power aspects to moving faster.
Let’s say you play with war mode on. If you are flying by on a 60% speed mount, you cannot outrange the net gun before you get shot down. You die because of this.
But if you have 310%, the enemy player will have a hard time getting the net gun to fire in time. Even if they do, you are likely to land so far away that you can mount before they can engage you in combat, and you’ll be outside of net gun range next time.
Even if you don’t play with war mode on, let’s say you’re heading toward a rare spawn being killed. It’s got 10% health left. You definitely can’t make it on foot. Good thing you’re flying through the air at 430 yards/second instead of the measly 100 yards/second that running would give you.
Speed is a clear power increase in any situation where you are moving.
Disregarding time is just plain wrong. When you really think about it, what is the point of the most obvious aspect of your power, DPS? It’s to kill something faster.
TL;DR: Even DPS is just a way to decrease the time it takes to perform the action of murdering. Anything that decreases your time spent achieving the goal is a power increase. Moving faster easily falls under that category.