This piece is given to you when you charm Advisor Svartmane and give him the fruit from Castle Mistmore. The only prob is, this zone is still keyed, so a person has to keep killing mobs on each floor until the key holder spawns. He can spawn off any random mob, pops as soon as you kill it. Then take the key to a mirror and your keyed for that level. This can take a while (seven floors, 6 keys), unless you bring or find someone already keyed! If they are in a group with you, they can take you right to the 7th floor. He is straight ahead through first door on 7th floor.
Edited, Aug 9th 2009 2:15pm by LordDunsany