Shulker Stone.

This rare block spawns under end islands and looks like a shulker box on the top. the other sides look like cracked endstone with a shulker hiding inside. It reacts to gravity but falls UP instead of down. Mining this with diamond or better drops shulker fragments. Silk touch drops the block, and when smelted makes a shulker shell. 9 shulker fragments in the crafting grid also give you a shulker shell.

However, the main use of this block is the shulker fragments. If you put four diamonds around a shulker fragment, with endstone on the edges in the crafting grid, you get one Endite ore. This is a next-tier gear, upgraded using Endite templates(found in end cites) and netherite gear. It loses the knockback resistance, but makes it so when you fall into the void, you get levitation.

The third and final use of shulker stone is that you can craft it with 8 shulker shells around it, creating shulker air bricks. This block can be placed on air, cancels fall damage, and teleports into the nearest players inventory when broken. Carrying two shulker air bricks with full endite armor allows you to nerd pole out of the void and cheating death some more.

That was a lot, so PLEASE add this!