Dragonblight

When Dragonblight enters the battlefield, create
a tapped snow land token with "{t}: Add {c}."
{1}{s}: Exile Dragonblight. You may play it from
exile during your next turn. Activate only as a
sorcery.
{w}{u}, {t}, Sacrifice Dragonblight: Counter target
noncreature spell. Activate only if you control
five or more snow lands.