The Courier's Caravan Deck

{2}, {t}: Roll a d20 and subtract the number of cards in your hand. If the result is 0 or less, discard your hand.
1-9 | Return a card at random from your graveyard to your hand.
10-19 | Draw two cards.
20 | Put a creature card from any graveyard onto the battlefield under your control. When that creature dies, its owner loses the game.