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 - $21.25
Near Mint Non-English - $21.25
Lightly Played - $20.25
Lightly Played Non-English - $20.25
Moderately Played - $17.00
Moderately Played Non-English - $17.00
Heavily Played - $12.75
Heavily Played Non-English - $12.75
Damaged - $10.75
Damaged Non-English - $10.75