Yorvo, Lord of Garenbirg

Yorvo, Lord of Garenbrig enters the battlefield with four +1/+1 counters on it.
Whenever another green creature enters
the battlefield under your control, put a
+1/+1 counter on Yorvo. Then if that
creature's power is greater than Yorvo's
power, put another +1/+1 counter on
Yorvo.