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Zack Fair entra con un contador +1/+1 sobre él.

, sacrificar a Zack Fair: La criatura objetivo que controlas gana la habilidad de indestructible hasta el final del turno. Pon los contadores de Zack Fair sobre esa criatura y anexa un Equipo que estuviera anexado a Zack Fair a esa criatura.
Zack Fair's last ability doesn't cause you to move counters from Zack Fair onto the target creature. Rather, you put the same number of each kind of counter Zack Fair had when it was sacrificed onto the target creature.
Zack Fair's last ability puts all counters that were on Zack Fair onto the target creature, not just its +1/+1 counters.
In some unusual cases, you may end up putting the appropriate counters on more than one permanent. For example, if you control The Ozolith ("Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.") when Zack Fair's last ability resolves, you'll put the appropriate number of each kind of counter onto both The Ozolith and the target creature.