Ravenous Treasure Amalgamate

As Ravenous Treasure Amalgamate enters the battlefiled, you may sacrifice any number of treasures.
Ravenous Treasure Amalgamate enters the battlefield with a number of +1/+1 counters
on it, equal to the number of sacrifed treasures.
Whenever an artifact leaves the battlefield, put
a +1/+1 counter on Ravenous Treasure
Amalgamate.