Gunpowder

Gunpowder is an item that is used for explosion-related recipes. Gunpowder is used in brewing as well for making splash potions.

Creepers
Creepers can drop 0-2 pieces of gunpowder upon death. Looting can increase this by one per level, with a maximum of 5 gunpowder.

Ghasts
Ghasts can drop 0-2 pieces of gunpowder upon death. Looting can increase this by one per level, with a maximum of 5 gunpowder.

Witches
Witches can drop 0-6 pieces of gunpowder upon death. Looting can increase this by three per level, with a maximum of 15 gunpowder.

Trading
Wandering traders have $1/6$ chance to sell Gunpowder for an emerald.

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