Either I'm missing something, or the Outlander skill Bane Breath is really weak.
The range is tiny, about half of base pistol range, and smaller than the animation for it. The damage is fairly low, and the minions only seem to spawn if the enemy is killed by the DoT, not simply killed while the DoT is on them.
At level 50, mine does like 1700 damage at max plus the +200 poison damage of 300 or so that actually translates to upwards of 700 because of elemental mastery and focus. It is a skill that starts off pretty bad but it becomes a mob killer and a good boss tool to convert the little guys it summons. The main reason you get it though is for the teir bonuses to all your minion(not just shadowling feinds)