Condi Conversion
There’s nothing wrong with it.
Transmute: Coverts weakness to 3 seconds of protection. Vulnerability converts to one might stack. There’s so much cover condition that anyone will hardly get protection from transmute.
Warrior Warhorn conversion:
Has higher chance of converting vulnerability to protection than Enginners, but it’s usually covered by poison, burn, bleed in a team fight. Shoutbows are usually the easiest target in a team fight. Shoutbows getting 3 seconds of protection in a 1v1 is the least of your worries.
Definitely not “broken.”
Physicks [The Dankening]