Hiro's Pumpkin Patch

As Hiro's Pumpkin Patch enters the battlefield,
you may pay 2 life. If you don't, Hiro's Pumpkin
Patch enters tapped.
{t}: Add {w} or {b}.
{x}{w}{w}{b}, {t}: Sacrifice Hiro's Pumpkin Patch:
Search your library for a {w} or {b} card with
converted mana cost of X, put that card into your
hand.
"The white ones smell like cantaloupe." - A. Bolster