Rydia of Mist

Imprint — When this creature enters the battlefield you may look at the top seven cards of
your library and exile up to three creatures selected from those cards and your hand. Shuffle
your library afterwards.

{x},{t}: create up to one token for each of the exiled cards that is a copy of the card, except it has haste, flash, and "at the next end step exile this creature".
X is the converted mana cost of the copied cards.