Tentacles

[NMI]

the bonuses/penalties would be the same as the tentacle power or multiple limbs

[Nemo235]

If I was to replace Monstrous Form's arms with the following what would be the penalties, bonuses, and damage of the tentacles.
In place of each arm he has two monstrous tentacles. The tentacles split at the end, into three radial “fingers.”

Scorpion_Freeman, I must say you always come up with the creepiest ideas.
I'm not saying that's bad or unheard of in comic books.
You must play with a pretty heavy mix of horror and weird menaces in your games.

[znbrtn]

alter physical structure of limb: tentacles would be a good place to start. write it up somewhere between that and the multiple limbs suggestion above, and perhaps make it a monstrous form feature of its own. if it comes out too beefy, you could write it so that it overwrites the basic claws that come with the power to balance things out.