Rework the opening of Elite Zodias Gauntlet. Create an elixir to a portal that can spawn after boss kills, 10 wave boss encounter like EZG but use 'Fallen' Bosses from previous maps but super buffed up. Some sort of rare drop there.

Create new mobs that spawn randomly(Like Elusive as or a pack of mobs) that are super strong. This could also be an AP I guess( Kill 'Ruthless Spawn Pack' X amount of times.). They could have a wide range of abilities and must be really tanky. (Give them recolor aura drop or gold).