A Mavinian deck of cards has five ranks and twelve files. A regular deck of cards has four ranks (or suits) and thirteen files. Whereas a regular deck has two colors, the Mavinian Deck has three; red, black and green. The ranks are as follows:

Rounders, or Naughts. This rank is green.
Crosses or Marks. This rank is red.
Trivens or Triangles. This rank is black.
Boxes or Squares. This rank is red.
Stars or Grams. This rank is black.

The files for all ranks go from Master to Slave with numbers in between ranging from one to ten. In typical order, the files range as follows: M,10,9,8,7,6,5,4,3,2,1,S. In games where cards can be wild, it is typical for ‘fives’ to be wild. The Master and Slave cards can sometimes contain pictures, but usually contain letters instead.

Mavinian Poker
Similar to Draw Poker, each player puts an ante into the pot before being dealt five cards. After receiving the inital five cards, each person again bets, this time using raises and calls per regular poker. Being asking for a draw, each player must pass a card to a player next to them. On the first hand, you must pass a card to the right. One the second, to the left. Every third hand is a ‘keeper’ and no cards are passed. Before asking for draw cards, any person may fold.
Once the cards are passed, each person, starting from the left of the dealer and going clockwise may ask for 0,1, or 2 draw cards. After each player takes their turn, another round of betting begins.

Scoring is slightly different, only because Rounders are considered the highest suit. More on that later.