Bygone Sentinel

When Bygone Sentinel enters the battlefield, put
4 +1/+1 counters on it. If it entered the
battlefield from exile, put 2 more +1/+1 counters
on it.
Suspend 4—{1}{w}
Whenever a time counter is removed from
Bygone Sentinel, you may put a +1/+1 counter
on target creature.