Doc Ock, Maniacal Genius

Doc Ock enters the battlefield with four +1/+1 counters on it.
If damage would be dealt to Doc Ock while it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from it.
{t}, Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of those cards into your hand and the rest into your graveyard.