Blue creatures don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {4} for each creature chosen this way. If the player does, untap those creatures.
Near Mint - $8.40
Lightly Played - $6.70
Moderately Played - $5.90
Heavily Played - $5.10
Damaged - $4.20
Near Mint Spanish - $8.40
Lightly Played Spanish - $6.70
Moderately Played Spanish - $5.90
Heavily Played Spanish - $5.10
Damaged Spanish - $4.20