Descend to Ascend

This mod adds a bunch of new ores with armor and tool sets that can be obtained by using their Redstone Infused Coal counterparts in the Skyforge and Underforge(from 1.4.5 on it needs to be in the dark to work)(You need the Skyfurnace and a Emerald Infused Lava Bucket to smelt the ores).

You get specific buffs when holding the best tools with the same ore as your armor(works with Cornelian(immunity to all effects(good and bad), Heliodor(Resistance and Fire Resistance) and Allanite(Water Breathing, Glowing, Regeneration and Night Vision).

Adds 3 bosses to the game:

And a relic that allows you to fly:

You have to smelt in a normal furnace your Redstone Infused Coal Block to get a Redstone Infused Coal Ingot and then craft the armor and tool sets through normal crafting formulas in the crafting table.

Also adds a bunch of music discs that you can get through breaking Music Boxes(check images, green, yellow and pink blocks), structures and some decorative blocks.

Really late game mod.

When you wake up, you get a regeneration buff, your food level is set to 6(3 full drumsticks) and you get a hunger debuff just to make things a bit more realistic. Also adds some recipes to recipeless vanilla minecraft items/blocks.

Works better with FlatBedrock , ArmorHealth and AttributeFix mods(since all armors are better than diamond and minecraft has a damage reduction cap), but are not needed. JEI is also really usefull.

Ocean Colossus Amulet doesn't work with BetterWeather.