The Fire Crystal

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

To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Fire Crystal's first ability). The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.

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.