Levels

Stacking identical spawners into one, what a level multiplies, and breaking levels off again.

Instead of placing ten zombie spawners side by side, a player stacks them into one at level 10. It produces what the ten would, from one block, into one storage, with one menu to empty.

Levelling up

The owner opens the spawner and presses Level Up. Every spawner item in their inventory that is identical to the placed one is merged into it, one level each, until the limit.

The owner is told	Why
How many levels were added	It worked
No matching spawners were found	None in the inventory are identical to this one
The spawner is at the maximum level	`level-limit` is reached
They cannot do this with a spawner in the off hand	Move spawners out of the off hand and the armour slots first
They are not the owner	Friends cannot level up someone else's spawner

Identical means the same item: the same type, name and lore. A spawner item handed out before you changed that type's name in the config no longer matches one handed out after.

spawner-level-limit:
  level-limit: 256

in modules/other.yml.

What a level multiplies

Spawner	Effect of the level
`ENTITY` with auto-kill	The loot and XP of every cycle
`ENTITY` without auto-kill	The drops and XP of each mob when it is killed. The number of mobs does not change
`ITEM`	The number of items each cycle

The level does not raise the storage limit. A level 50 spawner fills its storage fifty times faster, so storage tiers matter more on servers with high levels.

Breaking levels off

How	Result
Break the spawner	One level comes off, and one spawner item drops
Sneak and break	Every level above 1 comes off and drops, and the spawner stays at level 1
Break a level 1 spawner	The block is removed, with its storage, and one spawner item drops

Each item that would drop is rolled against the player's drop chance, so with a chance below 100 some of the levels can be lost. See Breaking Rules.

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