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Just like other molds,the Crimson Key Mold can drop before killing Plantera. This mold can be farmed by killing the creepers from The Brain of Cthulhu. In mobile version,you can reuse the Bloody Spine item by simply tap on it and quickly tap on another item in your hot bar.

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It is dropped by monsters in The Crimson after Wall of Flesh has been defeated. Just like other molds, the Crimson Key Mold can drop before killing Plantera. This mold can be farmed by killing the creepers from The Brain of Cthulhu.

If you want to artificially build a biome to farm Key Molds in, there are two ways to do so: Gradually stacking one or more block types of the relevant biome until the amount of blocks calls it forth. The compactness of the stacked blocks allows a relatively small area to create a biome. For further info, see Guide:Artificial biomes.

A dropped Hallowed Key Mold. Biome Keys are used to open Biome Chests in the Dungeon, which provide access to some powerful post- Plantera weapons, such as the Vampire Knives and Rainbow Gun. But they drop at the very low rate of 1/2500 (0.04%), and are only dropped when the player is in the key’s corresponding biome.

For tips on obtaining Key Molds, see Guide:Farming Biome Keys or Key Molds. Biome Key Molds are extremely rare Hardmode crafting materials that are used to craft Biome Keys, which open Biome Chests once Plantera is defeated. After the Wall of Flesh is defeated, every enemy killed within an eligible biome has a