How to use those and what are they for?Thanks ;)

It's the boss quest...click on the boss icon with right click and get the quest. You gotta kill 30/30 super majin buu's. Then when it's 100% bosses spawn on the map (yellow or red) u see dragon head icons on the maps when they appear. Kill one boss and a NPC will spawn from which u will get the reward (30/30 super majins) choose 2 golden devil medals/tokens. When u get 30 golden medal/tokens or 250 silver you can buy yourself a title from the NPC that spawns after you kill the boss. Many people should be there helping you with it because the boss has near 2mil LP and powerful attacks.

Thanks, Nik, very informative! I ve been looking for this for a while in forums =)

what's those things ?

useless. Usually gotten after a failed crafting attempt or Medusa gambler

-.- I wasted 1000 mudosa point for nothing -.-

Does anyone know what this is??

Right click it you might get a quest...?

I have seen 1 rare item in AH, it look like a capsule with a yellow ball inside. what's this item ?

@Mauro its hard to tell you without a pic...maybe its a crafting item ... maybe not.