Choose a creature type. Reveal cards from the top of your library until you reveal X creature cards of the chosen type, where X is the number of creatures you control of that type. Put those cards onto the battlefield, then shuffle the rest of the revealed cards into your library.
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You must choose an existing creature type, such as Vampire or Cat. Card types such as â€œartifactâ€ canâ€™t be chosen.
You canâ€™t choose multiple creature types, such as â€œCat Warrior.â€ A Cat Warrior is both a Cat and a Warrior. Itâ€™s affected by anything that affects either type and unaffected by things that affect non-Cat or non-Warrior creatures.
If you reveal your entire library and reveal fewer than X creature cards of the chosen type, youâ€™ll put the cards of the chosen type that you did reveal onto the battlefield and shuffle your library.