Sully, Professional Scarer

Partner with Mike Wazowski, Jokester
(When this creature enters the battlefield, target player may put Mike Wazowski into their hand from their library, then shuffle.)
Whenever you draw a card, put a +1/+1 counter on Sully, Professional Scarer.
When Sully leaves the battlefield, draw a
card for each +1/+1 counter on it.