Untap

To untap a permanent is to rotate it back to the upright position. The untap symbol ({Q} in these rules) in an activation cost means "Untap this permanent"-a permanent that's already untapped can't be untapped again to pay the cost. Creatures that haven't been under a player's control continuously since the beginning of his or her most recent turn can't use any ability of theirs with the untap symbol in the cost. See rule 104.5.