Fleshilite Ore

Fleshilite Ore is a type of ore that spawns in the world after a Cryptic Old Skull is right clicked on a Hecatomb Altar. It needs one of the Luminite Pickaxes to mine, which are obtained from the Celestial Towers' fragments and Moon Lord's Luminite. These include: Solar Flare Pickaxe, Nebula Pickaxe, Stardust Pickaxe, Vortex Pickaxe.

Fleshilite is one of the steps to summoning the last Hardmode boss, The Doom. It can be crafted into two things - a decorative Fleshilite Brick and also the final step to summoning The Doom, Resurrection Orb.

The ore does nothing other than crafting those two. It is just about as rare as Orichalcum Ore.