Wreck Gar

undying (When this creature dies, if it had
no +1/+1 counters on it, return it to the
battlefield under its owner's control
with a +1/+1 counter on it.)
persist (When this creature dies,
if it had no -1/-1 counters on it,
return it to the battlefield under its
owner's control with a -1/-1 counter on it.)
haste