Frozen Orb

When Frozen Orb is untapped control can't untap lands
Pay 5 life: {t} Frozen Orb
{5}{e}{ut}: give target opponent control of Frozen. This ability can only be used when Frozen Orb is tapped
Pay 7 life, sacrifice Frozen Orb: you may search your library for target permanent. If you didn't you gain 7 life.