Beckett

Flying, Hexproof, Indestructible, Haste.
You have no maximum hand size.
{r}: Draw a card
{r}{b}: Draw two cards
{r}{b}{g}: Draw three cards
{r}{b}{g}{u}: Draw four cards
{r}{b}{g}{u}{w}{s}: Draw five cards
{w}{w}{u}{u}{b}{b}{r}{r}{g}{g}{c}{c}{t}: You win the game