Cruel Imposter

{3}{u}: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)
Whenever one or more +1/+1 counters are
put on Cruel Imposter you may exile target
creature card from a graveyard. Cruel
Imposter becomes a copy of that card, except
it has this ability.