When you become lvl 180 there should be a 4 way boss fight. (You have to kill Jade Oni then Malistare Currupted Wizard Adult Morganthe)
Malistare death 2x the health in dragonspyre If malistare dies Jade Oni says "Wrong target!" he stats are the same using the best balance spell at current time. He does Adult Morganathe life 50000 health it every time someone dies other than him. stats converted in life version When Currupted Wizard dies all the other bosses use the best attack at that time Jade Oni balance When he is the only one remaining he uses 25000 health rebirth every turn of not attacking myth life and death boost 50% He uses the strongest storm spell at that time with critical and no block if he is the last one remaining Currupted Wizard star 100000 health (star resistance boosts etc.)
The boss battle wont be the last. Just the last dungeon in that area. The place should be a real world type of world. With cars and buildings that are current in the world. You could face bandits and other things that are real in real life at the moment.