Patrick Star, the Silly

Patrick enters the battlefield with 2 +1/+1 counters.
At the beginning of your upkeep, if you didn't cast anything last turn, put a +1/+1 counter on Patrick.
At the beginning of your end step, remove a +1/+1 counter from Patrick.
Patrick has +1/+1 if you control Spongebob Squarepants.