Rusty, the Goodest Boy

Partner with Borumm, Dogs Master
Rusty, the Goodest Boy can't block.
Rusty, the Goodest boy gains double strike if it's
power is 10 or greater.
Whenever a creature enters the battlefield under
an opponents control put an intimidated
counter on it.
Rusty, the Goodest boy gets +1/+0 for each
creature with an intimidated counter.