I want to know what a Black Mask (10) is, and hwta it does. I want to also know what the (10) dus and whats each charge do? Thanks :)

Black masks give bonuses of + 15% str, att, and def when you are killing monsters assigned to you by the slayer masters.

 

 

 

The charges are random and decrese the defence of your opponent a small amount, when a mask reaches 0, it still has the slayer effect.

Thanks, thats why there alot of money huh?

yes and the fact that there is a fair few quests to do before you can get to the monsters that drop them so most people would rather buy them :