How exactly Tornado Shot works?
For example, with Endless Munitions passive and against single boss.
"Skills fire an additional Projectile", so 2 projectiles will go towards the boss. What distance from each other? Zero? Parallel trajectories?
When will they do the first damage? When reaching the boss's outer surface, or when reaching the point, somewhere inside the boss, which was pointed by the mouse cursor?
Where start the secondary projectiles from? If from inside the boss, then while traveling inside the boss's body, they harm the boss? Are they piercing at all or not? They are treated not piercing, but as if they were launched from the outside surface of the boss? So, the boss is guaranteed to not hit by the secondary projectiles? But this contradicts the "particularly effective against single targets" sentence.