@goku:
When on Phodom path, you walk into a crystal cave. Zoom out your camera so you can see a big area, go around and you will see a wisp inside the crystal, click on it. There are 5 in total.
If you play properly, you will unlock 6 teleports in total and will be able to use the teleports without any magic ball. You unlock 1 at the beginning, where you receive the quest, 2 on Phodom path, 1 on Fradz path, 1 on Galeoth path and one near the obelisk.
About Epic/Elite, you won't be able to fight them if you don't complete teleports quest.
About the Keepers, I think it's a bug. Actually it should be Keeper of Revenge who drops the Keeper Mask, not keeper of the dark.
@witchdoc
Sell it.