Add a Bat Wing to your (Skeleton Type)

Wiki note: The title of this option varies with its number of fins and Torso Style and Menace qualities:
Add a Bat Wing to your

Skeleton: Fins	Text
0	Finless
1	Single-finned
2	Double-finned
3	Triple-finned
4	Quadruple-finned
5	Five-finned
6	Six-finned
7	Seven-finned
8	Eight-finned
9	Nine-finned
10	Ten-finned

Skeleton: Torso Style	Text
10, 15	Human
20	Thorny-Breasted
30	Seven-necked
40	Many-limbed
45	Segmented
50	Mammoth
55	Luminous
60	Baroque
70	Deep-water
80	Prismatic
100	Starved

Skeleton: Menace	Text
0	Creature
1	Animal
2	Beast
3	Monster
4	Monstrosity
5	Demon
6+	Abomination

A player-created Guide is available for this content: Assembling a Skeleton (Guide)

How are the above links here?

ID: 242511

Spoiler warning! This page contains details about Fallen London Actions.

From: Assemble a Skeleton

Might it enjoy a flight?

Game Instructions: It will be harder to do this convincingly if the skeleton already has fins. Bat wings will reduce the Menace of the skeleton by one point.

Unlocked with Skeleton: Limbs Needed, 1 x Bat Wing

Locked with Skeleton: Skulls Needed

Challenge information

Narrow, Monstrous Anatomy 0 (50% base)

• 0 - very chancy (50%)
• 1 - chancy (60%)
• 2 - modest (70%)
• 3 - very modest (80%)
• 4 - low-risk (90%)
• 5 and above - straightforward (100%)
  

Difficulty shown is at no Skeleton: Fins whatsoever.

Each point of Skeleton: Fins increases the base difficulty by 2 points.

Success

Less disturbing than the original?

A bat is a very common creature in these parts. Adding bat wings to something only makes it seem more familiar.

•  You've gained 1 x Approximate Value of Your Skeleton in Pennies
•  You've lost 1 x Skeleton: Limbs Needed
•  You've gained 1 x Skeleton: Wings
•  You've lost 1 x Bat Wing
•  You've lost 1 x Skeleton: Menace

Failure

A strange fit

Perhaps you have the angle of the wings wrong. But it is difficult to imagine this creature in flight.

•  You've gained 1 x Approximate Value of Your Skeleton in Pennies
•  You've lost 1 x Skeleton: Limbs Needed
•  You've gained 1 x Skeleton: Wings
•  You've lost 1 x Bat Wing
•  You've lost 1 x Skeleton: Menace
•  Your skeleton has become less believable. (Raises Skeleton: Self-Evident Implausibility by 2)