Titans

Deep in the earth, you will find egoriks ore, which is stronger than diamond. From it, you can craft weapons and armor. Also, by finding a lost ship, you will discover resources that will help you defeat the water boss dwelling near the ship. The Lost House and the Lost Mine will help you locate this ship. By defeating the boss, you will be able to craft a material surpassing netherite - maxis. The new smithing template is deep inside the mountain, which can be found using a map bought from a villager. It is needed to craft Maxis armor more cheaply.

You can find the ship using maps sold by villagers: the fisherman and the cartographer, or find maps in the Lost House or in Lost Mine. For the water boss to appear, you must sail to the ship at night during rain.