Juvenile Mist Dragon

Dragão de Névoa Juvenil (Juvenile Mist Dragon) (pt)

Creature - Dragon | Power/Toughness: 4 / 3 (CMC 5)
Flying
Confounding Clouds -- When Juvenile Mist Dragon enters the battlefield, for each opponent, tap up to one target creature that player controls. Each of those creatures doesn't untap during its controller's next untap step.