Festerface is up this week - get your achieve for Legion Hero

If you don't know how to do it, go into Violet Hold on Mythic. Pull him but dps him slow-ish. When he gets to 100 energy he will spawn a black bile. Click one of the candle sticks and it will kill the bile. Kill Festerface after the bile is gone.Edit: I know he is up at least for US - unsure for EU.