Harry Potter: Eclipse. - Chapter 59:

The vast seas are filled with abundant resources but are also home to numerous sea demons, making it a place difficult for human cultivators to tread.One day, Lu Li crosses into the vast and boundless sea realm of immortal cultivation, carrying with him a magical beast-refining pot that can transform into various sea monsters, allowing him to roam the seabed.While cultivators on the islands struggle for a single spiritual herb, Lu Li has already built an underwater spiritual farm base.Watch him strategize step by step, leaving a footprint with every move, as he grows into a top-tier power in the world of immortal cultivation. Looking back after countless years, the days spent fighting sea demons, refining evil spirits, and treasure hunting in the deep sea remain vivid in his memory...

Eli was transmigrated to a world of magic and became immortal.

He had endless life and could never die.

“Huh? I’m talentless? Then, I’ll just train for as long as I need, even if it takes 1000 years. That should be enough for me to become strong.”

“The skill is hard to learn? Then, I’ll take a few dozens of years to research it. There’s no way it’s that hard, right?”

“What? I can sacrifice my life force to gain spirit power? That’s a bargain!”

“The enemy is here? Hell, I’ll just hide for 10000 years. Let’s see if he can outlive me. I’ll come out once he’s dead.”

This is the story of an immortal who first struggled to live in the world of magic until he became strong enough to slaughter endless worlds.

The days where adventurers would roam the land and grow strong are long gone. More than 99.9% of the world's population is level 1, and in fact, leveling just isn't something people think about anymore, as almost every spawn point on the planet has been gone for close to a thousand years. Only the elites, the super rich, or the super lucky have access to spawn points, and because of this, they are like Gods among men: like superheroes. For people like Zach, life is a mundane, ordinary experience of getting up, going to school, working, and then going back to bed. But that's all about to change when he stumbles upon one of the only unknown spawn points in existence. And in doing so, his life is about to descend into a wild chaos he never could have expected. (Lit RPG, fantasy, action, slow burn)