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Create a token that's a copy of target creature you control.
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Any enters-the-battlefield abilities of the copied creature will trigger when the token enters the battlefield. Any "as [this creature] enters the battlefield" or "[this creature] enters the battlefield with" abilities of the target creature will also work.
If the copied creature has {X} in its mana cost, X is 0.
If the copied creature is a token, the new token that's created copies the original characteristics of that token as stated by the effect that created the token.
If the copied creature is copying something else, then the token enters the battlefield as whatever that creature copied.
The token copies exactly what was printed on the original creature (unless that permanent is copying something else or is a token; see below). It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on.
