Nerf to players that used persistent Artifact Key to get powerstone

[Jam31st 0]

Hi, 

My suggestion is to remove the power stones (and levels) from those players that had a persistent key. lt gives an unfair advantage to those players as they have up to an additional 40 (roughly) levels that they got by exploiting a bug.

Shouldn't be too much of a problem for them as they like to let you know how easy it was and still is anyway, right?