Question on his fury:

"Deal 300% of your MAX HP as random damage to the target and have that target deal 300% of its MAX HP as random damage to you"

Most of the time he is killing himself because of this shit fury. What's the point with it? Is there something I missed?
I got the feeling that it's another mistake by the devs as always when they introduce a new toon.
Can somebody explain how this should work?

PS: he is complete useless in this game!!!