Shadow Hold, Deadly

(Transforms from Cieran Locale, Shadow Hold.)
Shadow Hold, Deadly's power is equal to the
number of nightmare counters on it.
Everytime Shadow Hold, Deadly attacks or
blocks, chose two:
•Remove two nightmare counters from it. You
may only chose this option if it has two or more nightmare counters on it.
•Sacrifice a creature you control.
•Lose three life.