
Potato disciple |

Sup you guys. So in response to a thread about a guy wanting to play a marilith style character (Who's name I can't remember ATM), I decided to take matters to my own hands and make a class just for that purpose (probably preparing for the day I will have to homebrew my own campain).
With that in mind, I am glad to present you (drum roll):
Marilith Class!!!1
Too good? Too weak? You tell me!

Lady-J |
i say its far to weak,i am just currently running on about 4 hours of sleep for the past 48 hours so my statements will be pretty blunt as i'm way to tired to go in depth with explanations but i feel like i should reply b4 i go to sleep.
problem one you have it so natural armor doesn't stack but natural armor always stacks
problem 2 you have extra arms coming in one at a time they should come in as pairs
the tail ability should just be permanent.
multi weapon master comes in a bit late as do the demonic resistances
instead of spells they should be sla's x/day and the maralith form ability makes little to no sense.
should get a little more stats and more natural armor over its career especially since it has little to no other class features
as it stands it will lose a 1 on 1 fight with a real one at level 20 which shouldn't be the case
some suggestions for improvement,as listed above if kept as a 20 level class, however if all that progression it has currently was condensed into 10 levels of a prestige class it would probably be ok mostly as is
i will come back to this later and give some more detailed explanations on changes as it is very late and i am very tired

Potato disciple |

Ok, here it is: Marilith Class2.0. Added SLA's instead of spells, doubled nat armor increase and added the infuse weapon class feature. how is it?

THUNDER_Jeffro |

Alright, some initial thoughts from skimming:
I feel like the list of class skills is very limited. I would go with an amount more like the amount suggested under the outsider type (Bluff, Craft, Knowledge (planes), Perception, Sense Motive, Stealth, 4 that fit the theme).
Abilities like infuse weapon usually specify that your weapon must have a +1 bonus before applying special qualities. Additionally, the wording on how many weapons they can affect is unclear. A marilith 6/fighter 6 appears to be able to affect 3 weapons or 5 weapons depending on how you read it (2 from 6 levels of marilith, 1 from 6 levels of fighter; or 4 from their 12 levels they posses and 1 from 6 levels of fighter).
Does a marilith eventually gain eight arms at 20th level? That may be intended, but I would mention where it maxes out (6 at 12th level or 8 at 20th level).
The multi weapon master ability is extremely powerful. I understand the Bestiary Marilith can use multiple weapons with no penalty, but I would consider the inclusion of that ability long and hard.
SLAs: You may want to remove the mention of arcane spellcasting from weapon and armor proficiencies, since you changed their magic to SLAs. Telekinesis at will at level 11 is extremely powerful. I would recommend scaling it (gain a use and then additional uses later, possibly at will at a much higher level).
Since this is a class, does your original creature type at any point change to be an outsider?
Have you seen any of the monster classes from 3.5 Savage Species, Dreamscarred Presses' Monster Classes line, or Rite Publishing's In the Company Of XXX series? They might have additional inspiration if you haven't seen them.
I would second the idea that it seems like a very fun concept for a prestige class, transforming yourself into a marilith or marilith inspired creature.
All in all, it looks like a fun idea. If it's just for a fun game or one shot it would work out fine.

Lady-J |
just went over the updated one and looks actually pretty good however i would say add in some things at level 8, 10, 14, 16, 17, 19 to make it so there's no dead level(would suggest either rearranging existing abilities or adding some more stats
i feel there should be at least 3 more +2 con, 1 +2 int and 1 +2 wis) i like how you changed infuse weapon however i would suggest making it 1min/lvl like most other weapon bolstering abilities, one thing that could be done is instead of granting the str at earlier levels for other ability scores and to fill in the dead level at level 10 they would get a size increase to large gaining a +8 str,-2 dex, +4 con +2 natural armor
your resistances to elements at level 20 should be 10 not 5 as stated but you could throw them in at resistance 5 at lvl 14 to fill in another dead level.
another thing instead of unlocking different infusions at separate levels make it all 1 pool at the level the ability unlocks at but make it so its more like the paladin/anti paladin bond or the magus arcane pool ability

Lady-J |
I like the pool idea a lot. I'm a little hesitant about making her large, but substituting like 4 +2's is nice. Currently working on marli 2.1.
if your worried they will be getting to much str you could always flip the numbers have it be +4 str and +8 con or have it average out at +6 to both