[1.2.304] Strange items...

I thought a bit about that star thing above that cape. There's 5 different colors that equips can have (6 including grey); white, orange, blue, purple, and gold. Ergo, depending on the color the equip would have X amount of stars. White would be 1 star, orange 2, blue 3, etc etc. For each star, you get +1 to all stats and +1% HP. Of course, this would be a waste of all the new data types they added, so it's better to say that the kind of stats you gain per star is randomized. This is all speculation, but it's a very intricate system.

If it really is +1 to all stat and +1% HP, i would very much like this system as soon as possible.

Not necessarily. It says +25% damage, but SE says +40% damage too. Nexon's typically pretty bad at managing the ghost multiples of 100% that occur. (See: Stun Mastery)

We can't possibly know at this point. It's safer to think that it's +25% damage for now, since +125% would be the most broken thing possible. Of course the chance that these skills are PQ based or have some sort of limitation is extremely high anyway, so it probably doesn't matter.

Are you implying that the stun mastery change is a glitch?