Organ Improver red skull

The red-skull Organ Improver is an alchemy result with four red runes and one green. With Practical Potions researched it turns any skin, bones, skull, heart, brain or guts into the version of that organ with the most red skulls, 3 of them, at the Formulation Bench; skin, bones and skull need Anatomy mastery 5, the other three 7. Red skulls are what a zombie’s talent slots come from (see Zombies).

Until you have both the Formulation Bench, from Church Lighting I, and Practical Potions (100 green, 100 blue, after Alchemy, Advanced), it only gives what any mix gives: 4 red and 1 green tech points per flask and progress toward the Alchemist inspiration. At the Laboratory I the cheapest pair is a Stone and a Copper Nugget; Flax with Melted Fat also works.

How to obtain

Mix

Runes 41 ·Crafted at Laboratory I

Ingredient
Copper Nugget + Red Mushroom
Copper Nugget + Stone
Melted Fat + Tooth

197 ingredient combinations reach these runes — see how mixing works →

Traders

Name Tier Stock
Alchemist · town building — build it first Tier II 10
Alchemist · town building — build it first Tier III 10
Other sources, out of reach (1)

Craft

Workbench Ingredients Yields Duration Tech points
—
Alcohol ×1
Organ Randomizer ×1
Comet's Tail ×1
×2 6 12

Used for

Ingredient for

Workbench Ingredients Outputs Mastery Duration Tech points
Formulation Bench
Bones any quality ×1
Organ Improver red skull ×1
Bones ★★★ red skull3white skull1 ×1
5 6 12
Formulation Bench
Brain any quality ×1
Organ Improver red skull ×1
Brain ★★★ red skull3white skull1 ×1
7 8 13
Formulation Bench
Guts any quality ×1
Organ Improver red skull ×1
Guts ★★★ red skull3 ×1
7 8 13
Formulation Bench
Heart any quality ×1
Organ Improver red skull ×1
Heart ★★★ red skull3white skull1 ×1
7 8 13
Formulation Bench
Skin any quality ×1
Organ Improver red skull ×1
Skin ★★★ red skull3 ×1
5 6 12
Formulation Bench
Skull any quality ×1
Organ Improver red skull ×1
Skull ★★★ red skull3white skull2 ×1
5 6 12

Study

Study requires: Tech points Duration
Science ×15 1050 6 ( Researcher −2 )

Each item is studied once, on the Study Table. Studying does not use the item up. With the Scientist perk, a 30% chance of a Story.

Notes

  • The other Organ Improver (white skull) does the same for white skulls.
  • The town Alchemist sells 10 from its second tier.
  • Studying it costs 15 Science and gives 10 red and 50 blue.