Black aurum
The Black Aurem is created by performing the Ritual of Corruption on an Obelisk. It generates Dark Etherium for various ars magica recipes.  To charge power it grabs entities within an eleven block radius and "sacrifices" them. It does not work on summoned minions, but will target any other mob, regardless of hostility. Hostile mobs trapped by the Aurem are still capable of attacking a player. Mobs killed by the Black Aurem will not drop any items. To link it with a crafting altar, right-click it with a crystal wrench, t
Black Aurem Range


hen right-click the crafting altar block.

The Black Aurem is very fragile, having the same hardness as logs. This, combined with the creeper's ability to explode while trapped by the Aurem if a player is in range, makes it a bad idea to stand near the Aurem at night. The Black Aurem won't drop as an item once created, even if destroyed by a Silk Touch tool. It is best to keep one's distance from the Aurem once it's built, in order to prevent the Aurem from being destroyed by an errant Creeper. ​As shown in the image to the left, the Black Aurem has a range of roughly 10 blocks.


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A Black Aurem, much like the Obelisk and Celestial Prism, can be augmented via the placement of pillars surrounding it.

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The first level of increased efficiency is achieved by drawing a square around the Aurem with wizard's chalk, occupying all eight blocks in the 3x3 ring around the Aurem. The second level is achieved by constructing four two-block-high pillars of Nether Bricks at the corners of the chalk square, and placing a cap on each pillar of gold blocks, diamond blocks, or Chimerite Blocks. All four caps must be the same. For maximum efficiency, Chimerite Blocks should be used. An example of a Black Aurem with both upgrades applied is provided to the left. Note that the Aurem itself occupies the space in the center of the chalk square.