Obtaining the Obsidian Heart in Bosses of Mass Destruction

guide

The Obsidian Heart in Bosses of Mass Destruction is an endgame trophy dropped by the Obsidilith in the End dimension, unlocking powerful mob-warding and wall-teleporting equipment. Acquired by shattering the towering monolith guarding outer island arenas, this dense magical core acts as a vital crafting catalyst. Converting the heart into specialized gear provides players with unmatched spatial mobility and base protection.

The Obsidilith and the Obsidian Altar

Securing an Obsidian Heart requires tracking down the Obsidilith on outer End island chains:

Arena Distribution: The battlefield generates as a surface structure with a spacing of 64 chunks and a separation of 32 chunks.
Natural Mob Overrides: Normal monster spawning within the arena perimeter is disabled, isolating the confrontation to you and the boss.
The Obsidian Altar: Anchored at the arena center, the altar serves as the focal point for the encounter and subsequent resets.
Resetting the Fight: If you need additional hearts or wish to re-engage the encounter, consuming Brimstone Nectar (crafted shapelessly from 1 Netherite Scrap, 1 Dragon's Breath, and 1 Ghast Tear) resets the nearby structure.

Upon destroying the monolith, the boss shatters, dropping the heart alongside high-tier rewards.

Crafting the Earthdive Spear

Combining the heart with botanical thorns harvested from the subterranean Void Blossom yields the Earthdive Spear:

1 Obsidian Heart positioned in the top grid slot
1 Void Thorn set directly in the middle slot
1 Stick anchored in the bottom slot

The spear enables short-range teleportation through solid blocks. Charging and releasing the weapon phases the wielder directly through solid terrain, allowing instant traversal through subterranean cave walls, reinforced obsidian bunkers, and dungeon partitions.

Crafting the Staff of Suppression

For territorial defense, combining the heart with lich remains creates the Staff of Suppression:

1 Ancient Anima set in the top slot
1 Obsidian Heart placed in the middle slot
1 Obsidian block placed in the bottom slot

When placed as a standing block, the staff establishes a sanctuary by preventing all hostile mobs from spawning within a 64-block radius in every direction. This provides extensive base security without requiring dense torch grids.

Assembling the Blast Amplifier

The heart also acts as the stabilization core for the Blast Amplifier:

7 Obsidian forming the perimeter ring
1 Blazing Eye centered in the middle slot
1 Obsidian Heart positioned in the bottom-center slot

The block enhances explosive dynamics across a 64-block radius in all directions. This area effect cannot stack, meaning a single well-positioned amplifier covers the entire explosive radius without needing duplicate installations.