Welcome to Gaia! ::

as its still a work I'm just gonna dump what im thinking in here, so i dont forget.

the world: its called Keis pronounced Key-ehs, the planet is a punch of islands, most between the size of cuba and a small house, with three larger ones, one polar two equatorial, one of which is desert, only inhabited becuase it has a lot of mineral resources, the other tropical, the polar one is obviously covered in snow, only a single tribe of people that dont interact with the outside world.

the majority of the world is tribal or small towns with no real wide government or large church, local is the biggest ether gets, this is becuase of the seas

the seas are very shallow just about everywhere on the entire planet, large ship are very limited, so trade is also very limited, though the people have become quite good at moving small stuff, and people very fast.

the level of the worlds technology is ... primitive, sailboats and millstones. no guns, but there is gunpowder, its new, dont expect much.
Being that it is a planet made mostly of water and small islands boats have received a lot of attention and are the single most advanced thing on the planet.

there is magic; its not the same as the cards, and its much more difficult to get the same amount of power using it, but its easier to get specific power.
incantation is not necessary but helps inexperienced users, this goes for both magic and the cards (cards can be called by their value|suit or their name, learning the cards name increases its power by a lot but this is especially difficult)

on the subject of cards
first off, a character does NOT have to have or use cards, and may start at any time
although it should go without saying, if a character has cards he or she does not have to use them.
a character can only summon one suit of cards
a character's native suit, weather you start with cards or not (unless stated otherwise) is randomly chosen.
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to pick it generate a random number between 1 and 20; even numbers below 11 are hearts, odd numbers below 11 are diamonds, even numbers 11 and up are spades, odd numbers 11 and up are clubs ( finalized in Character thread)
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new cards (3-k) will be gained in two ways summoning and necessity; both of which are partly controlled by crew, they decide if a character has any chance of summoning a new card, and what that chance is, then the character has to get a random number in that range; for necessity crew will give cards, no chance involved, to a character they think is ready; there does however need to appear to be some sort of triggering event to jerk that card into existence, a character cant just be walking down the street and have a card poof into existence at their feet. the event doesnt need to be physical.

cards come in the standard four suits, hearts spades clubs and diamonds
the most powerful of each is the ace, of which exists only one, the rest of the cards are unlimited
Each suit has a specific type

Hearts deal with health, life, and body
Clubs deal with the mind
Diamonds deal with the elements, and forces of nature (this includes plants and animals)
Spades are weapons, their materialized form is a weapon, whatever power they give to the character is a weapon

all cards have some sort of materialized form

I'll continue in another post

About this world.
Would I expect any slum like atmospheres?
You know like Alcohol, crime and prostitution?

The joker isn't a card any player could obtain, but the idea of two omnipotent beings lording invisibly over the world, especially if they are somewhat opposing but not evil (or good for that matter). They wouldn't be direct players but could influence everything. This is definitely something to consider.

The rules card sounds like it might be too dangerous to the RP.