MapleSEA got Tempest

I'm pretty curious about the evolving system (or whatever it's called). From the pics, it seems like a good place to grind.
Anyone willing to explain how evo system works?

Cores drop from monsters in evolving world, or can be bought from the shop. Inputting the cores into the evolving world slots changes certain things about the evolving world dungeon, for example:
I could use a HPx5 core so that the enemies have more HP and give more EXP, I could also use a Monster Population +30% core to increase the spawn rate or a Party Exp +15% core to add party play. Then I could change cosmetic things about the dungeon by using a Monster Skin core, a Background core and a Background Music core.

Most people grind in Link 3 (one of the rooms inside the dungeon) because it has a ridiculously high spawn rate of flying enemies, and a machine in the middle which periodacally "Vacs" all enemies to one spot for a period of time. You can basically just stand there and kill all enemies that get pulled towards you, it's awesome and super quick levelling.

You can also make certain items drop like Level 110 weapons, or level 120 Necromancer weapons. Or 110 Pirate armour.
and lastly you can use certain cores to make bosses spawn, like Pianus, Manon, Griffey, Mihile, Oz, Hawkeye, Irena, Eckhart and Shadow Cygnus.