If you cast the spell by paying its entwine cost, the tokens don't enter the battlefield at the same time. The token that's a copy of the artifact creature enters the battlefield first, followed by the token that's a copy of the nonartifact creature. Then any abilities that triggered due to either of them entering the battlefield are put on the stack.
Mirage Mockery
If the copied creature has {X} in its mana cost, X is 0.
If the copied creature is copying something else, then the token enters the battlefield as whatever that creature copied.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Anna Pavleeva
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
