Son Lupus

When Son Lupus enters the battlefield, destroy
target artifact. If you control another card that
shares Son Lupus' card type, Son Lupus gains
+1/+1.
Wulfen Duels- If you control more than one Son Lupus, you may pay {g}{g}{b}{b}, and destroy one
Son Lupus. Target Son Lupus gains +2/+3 and trample until end of turn.