Rickon Stark, Feral Lord

When Rickon Stark, Feral Lord enters the battlefield create a legendary 3/3 wolf creature
token with trample and "whenever this creature
deals combat damage to a player put that many
+1/+1 counters on it" named "Shaggydog".
Whenever any number of +1/+1 counter are
placed on a wolf you control place the same
number of counters on Rickon.