Crazy Silvered Marcus

Crazy Silvered Marcus enter the battlefield with X +1/+1 counters on it.
When Crazy Silvered Marcus enter the battlefield, You draw X cards.
Cardsmith cards you have cost X less to cast, being X the number of +1/+1 counters on Crazy Silvered Marcus.
Remove a +1/+1 counter on Crazy Silvered Marcus: Crazy Silvered Marcus get +3/+3 until end of turn.