[Fulmanar]

Hmm, I like this idea. Maybe tinkers can create a flour bomb out of some gears, an explosion potion and a sack of flour.
It acts like an explosion potion, so you dclick it, throw it, and it explodes for minor damage and makes things around it visible (since they're covered in powder now)

This is the est idea i've heard so far, it makes a relatively useless skills very useful and necessary, this would promote the use of iron or other ingots and make a skill more prudent to macro.