Canary, Shadowed Operative

You may have Canary, Shadowed Operative
enter the battlefield as a copy of any creature
on the battlefield, except it enters with a shield
counter on it if you control that creature.
Exiled for a misjudged deed, Canary seeks redemption
in New Capenna's shadows. The weight of the city's
misdeeds weigh on him. Will he ever find a way out?