Put a Withered Tentacle on your (Skeleton Type)

Wiki note: The title of this option varies with its number of fins and legs and Menace qualities:
Put a Withered Tentacle on 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: Legs	Text
0	Legless
1	One-Legged
2	Two-Legged
3	Three-Legged
4	Four-Legged
5	Five-Legged
6	Six-Legged
7	Seven-Legged
8	Eight-Legged
9	Nine-Legged
10	Ten-Legged
11	Eleven-Legged
12	Twelve-Legged
13	Thirteen-Legged
14	Fourteen-Legged
99	Ninety-Nine-Legged
100	Hundred-Legged
101+	More-Than-Hundred-Legged

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: 242509

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

From: Assemble a Skeleton

It won't look aged, but it will look aquatic.

Game Instructions: It will be harder to do this convincingly if the skeleton already has limbs that aren't tentacles. The tentacle will reduce the Antiquity of your skeleton by 1.

Unlocked with Skeleton: Limbs Needed, 1 x Withered Tentacle

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%)
  

The difficulty is increased by 2 for each Leg, Wing, and Fin already attached to your skeleton.

Success

Dried flesh

It's easy to imagine this creature hauling people out of boats and down to the nightmarish depths.

•  You've gained 250 x Approximate Value of Your Skeleton in Pennies
•  You've gained 1 x Skeleton: Tentacles
•  You've lost 1 x Skeleton: Limbs Needed
•  You've lost 1 x Skeleton: Antiquity
•  You've lost 1 x Withered Tentacle

Failure

Dried flesh

There is a faint smell of squid jerky, and the join of tentacle to bone is not wholly persuasive.

•  You've gained 50 x Approximate Value of Your Skeleton in Pennies
•  You've gained 1 x Skeleton: Tentacles
•  You've lost 1 x Skeleton: Limbs Needed
•  You've lost 1 x Skeleton: Antiquity
•  You've lost 1 x Withered Tentacle
•  You've gained 1 x Skeleton: Self-Evident Implausibility