Chill to the Bone

As an additional cost to cast Chill to the Bone, pay 1 life.
Tap target creature. If {u} was spent to cast Chill to the Bone, that creature doesn't untap during its controller's next untap step. If {b} was spent to cast Chill to the Bone, put a -1/-1 counter on that creature. (Do both if {u}{b} was spent.)