Kambal, Profiteering Mayor

If the copied token has {X} in its mana cost, X is 0. (Most tokens don’t have a mana cost unless they’re copying something else.)

Any enters-the-battlefield abilities of the copied token will trigger when the token enters the battlefield. Any “as [this permanent] enters the battlefield” or “[this permanent] enters the battlefield with” abilities of the copied token will also work.

If the copied token is copying something else, then the new token enters the battlefield as whatever that token copied.