Nether cores

Nether cores are blazes that can be spawned by a player to turn nearby overworld blocks into nether blocks.

Command info
Lag level: low

Function folder: nether_cores

Version added: 1.0

Additional files: none

Obtaining
A nether core can be obtained by standing on a lit sacrifice altar during three seconds. Sacrifice altars are structures made of obsidian and fire: to create one, you must build a 3×3 obsidian platform, place a block of obsidian on top in the middle, and set fire to the top of that block.

If the player has any resistance or fire resistance while standing in the fire, they will be cleared instantly and the player will keep taking fire damage.

Using
A nether core can be summoned by right-clicking with the item on any block or by firing the item in a dispenser. The item will be consumed and the nether core will spawn. Within one second, the nether core will die, dropping no item, and turning the terrain in a 9×9×9 region into nether blocks.

Grass, dirt and stone are replaced with netherrack, ores will become quartz ores, logs will turn into soul sand, manufactured blocks such as stone bricks, planks or bricks will turn into nether bricks and water will become lava.

The nether core will also affect nearby mobs, turning skeletons into wither skeletons, allowing to make wither farms, converting zombies into pigmen and setting fire to all other mobs.

Nether cores are used at the end of the 1.1 version trailer.