Game Mechanics A new endgame challenge...

Here's the basic idea:
You know how swarms were quite loved? Well, why not bring them back as a Legendary Island Esque challenge? Perhaps even bring in AHC lore!

Here's the not so basic idea:
Have a challenge either in a single or several towns or in a location like LI that challenges you not on dps, but on sustainability. Summon swarms of mobs each getting progressively harder AND reduce the damage dealt by the player based off how fast the last wave was killed (this isnt set in stone)

Basically a high level Zeigeiht (I refuse to look up the stupid island's name) challenge

 

very cool endgame got boring fast