Board Thread:Spoilers!/@comment-4453062-20160217065238/@comment-6175354-20160223123727

NickyHelp wrote: And should know that there is always a price for resurrection, just like how magic always comes with it. You clearly no nothing about Greek Mythology then.

To resurrect a soul from the Underworld, the Living must convince Hades to release it. He would give the Living a test. If completed successfully, the soul would be released. If they failed, the soul was doomed for all eternity. The price was that the test was a one time deal.