Why is this rune PRESTIGE out of a sudden after update? It never was before - a reward from doing all CD heroics. Was that really too much to have for f2p players?
They posted in the update notes that they were grouping similar runes. They want to make sure you can't use two of the same type at the same time, obviously. Cut-and-pasting to make the runes uniform possibly occurred.
As of the patch Tuesday I was unable to quip the Fires of Mysteries with Vindicator's Mystery Rune. It unequipped one and put it in my overflow slot.