Item Prefixes

[Slayer]

Non tradeable items called "Gems", your weapon can level up to level 5, or lets just say 5 stars, with this is +1/2/3/4/5.

You can use a maximum of 4 "Gems" per time you wish to upgrade a weapon.

The more gems you use, the higher the chance of success of adding a star to your weapon.

If you fail an upgrade you drop down by 1 level.

If you fail the upgrade of 3-4 or 4-5, you drop down to 0.

I like this idea personally ^^

Gems are found via loot if your wondering.

PS: I'm not even sure if i'm on the right track of the OP, I don't really get it.