Riichi !!

There is no limit to the size of your hand.
You draw an additional card during your draw step. You can't play more than one card
during a turn. At the end of your turn, if you
have 14 cards in hand, Sacrifice Riichi !! Each opponent lose 5 life, discard 2 and sacrifice 2 permanents.

"Mahjong causes great damage to the human spirit without a single benefit."