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Syringes are used on certain mobs to obtain different Mutations that can be put on weapons and armor. To gain a Mutation from a mob, just right click on a mob that has a Mutation attached to it while holding an empty syringe. It will then be filled up with the Mutation, which you can apply to your weapons or armor by hovering over the item you want to mutate with the syringe and right clicking.
Syringes can also be used on the player and other entities. By holding the mutation sample and holding right click, the player will receive different effects depending on what Mutation the syringe had. When right clicking an entity while holding the mutation sample, they will receive the effects of the syringe.
Syringes also have a compatibility with the Just Enough Items mod to show what mobs give what Mutations.
Mutating Syringe
Usage: When right clicking on a spore mob with variants or on a spore weapon or armor piece, it will change variants, and cycle through them each time the player clicks.
Obtaining: Creative only item, can be found under the Spore Tech tab.
Stack Size: 1
ID: spore:mutation_syringe
Syringe
Usage: Can be used on 17 different spore mobs, all listed below.
When held with the player's cursor in their inventory and right clicking on a weapon or armor piece with a Mutation, the Mutation will be removed.
Obtaining: Crafted with three Iron Nuggets and one Glass Bottle. Â They are also found in equipment chests from various structures.
Stack Size: 16
ID: spore:syringe
Vampiric Blood Sample
Usage: Applies the Vampiric Mutation on weapons.
When used on the player and other entities, applies Regeneration II for 20 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Volatile or Hexenmeister when holding a Syringe.
Stack Size: 16
ID: spore:vampiric_syringe
Calcified Blood Sample
Usage: Applies the Calcified Mutation on weapons.
When used on the player and other entities, applies Resistance for 30 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Knight or Stalker when holding a Syringe.
Stack Size: 16
ID: spore:calcified_syringe
Berserk Blood Sample
Usage: Applies the Berserk Mutation on weapons.
When used on the player and other entities, applies Strength for 10 seconds, Speed for 20 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on an Infected Vindicator or Wendigo when holding a Syringe.
Stack Size: 16
ID: spore:bezerk_syringe
Toxic Blood Sample
Usage: Applies the Toxic Mutation on weapons.
When used on the player and other entities, applies Poison for 15 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Toxic Griefer variant or a Noxious Phayres variant when holding a Syringe.
Stack Size: 16
ID: spore:toxic_syringe
Rotten Blood Sample
Usage: Applies the Rotten Mutation on weapons.
When used on the player and other entities, applies Wither for 15 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Braiomil, Brotkatze, or Plagued when holding a Syringe.
Stack Size: 16
ID: spore:rotten_syringe
Reinforced Blood Sample
Usage: Applies the Reinforced Mutation on armor.
When used on the player and other entities, applies Absorption II for 10 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Leaper or Ogre when holding a Syringe.
Stack Size: 16
ID: spore:reinforced_syringe
Skeletal Blood Sample
Usage: Applies the Skeletal Mutation on armor.
When used on the player and other entities, applies Resistance II for 20 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Nuckelavee or Inquisitor when holding a Syringe.
Stack Size: 16
ID: spore:skeletal_syringe
Drowned Blood Sample
Usage: Applies the Drowned Mutation on armor.
When used on the player and other entities, applies Water Breathing for 30 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Bloater when holding a Syringe.
Stack Size: 16
ID: spore:drowned_syringe
Charred Blood Sample
Usage: Applies the Charred Mutation on armor.
When used on the player and other entities, applies Fire Resistance for 30 seconds and Mycelium Infection for 15 seconds.
Obtaining: Gotten when right clicking on a Crispy Umarmer variant when holding a Syringe.
Stack Size: 16
ID: spore:charred_syringe
Trivia
The Berserk Mutation was originally misspelled as "Bezerk." This was caught during beta, and fixed. However, the ID of the item still refers to it as "bezerk_syringe."