First visit the angry prophet and RuneScape gold put on your zamrock robes, he'll take you to a brotherhood meeting. Today you must answer questions about Zamrock, you will find five, should you get 3 wrong you'll be strike in a multi battle zone at 5 level 40s and 1 level 78. You can escape in the teleporter from the corner to test again. Should you kill the gain you'll get the amulet piece....