Blizzard have updated the Headless Horseman event on the Fury Incarnate PTR. Players can now increase the encounter difficulty to add mechanics to the fight.
Hallow’s End (Source)
Hello testers.
The Headless Horseman who terrorizes the denizens of Azeroth during the Hallow’s End event has had his dungeon encounter updated. You can now increase the difficulty of the encounter by speaking to the Wicker men at the dungeon’s entrance to enable extra mechanics. These curses are not party wide and afflict only those who enable them.
We’ve added the updated event dungeon to the PTR for testing over the next two weeks. Jump into the Dungeon Finder to queue for the Headless Horseman event on the PTR and share your feedback in this thread as you make your way through this limited time event dungeon.
Thank you for testing!