Quote Originally Posted by SpookyGhost View Post
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Onslaught is 100 potency on a 15 second recast. Plunge is 200 potency on a 30 second recast. If there was no gauge cost associated with Onslaught, it would be vastly better than Plunge. You're twice as mobile for the same potency. This is on top of the fact that Release has a built in Tempered Will effect. Between these two abilities, you'll have unrivalled uptime. I don't think you could increase the potency or decrease the cost in all fairness without significantly extending its recast.

While you could use Sprint to return to a mob more quickly, you can also use it to stay on a mob longer before you sprint out of an AoE. You can then gapclose back.

Not everything needs to be a flat potency advantage to be valuable. That being said, if there is ever a skillspeed breakpoint that allows for yet another additional GCD under your megazerk, I think it may end up being a potency advantage for Onslaught x2 to replace the final FC, as its relative efficiency to FC increases under both Berserk and Release. But even without this being the case, Onslaught is a very useful ability, even as pure quality of life.