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 - $25.30
Near Mint Non-English - $25.30
Lightly Played - $22.80
Lightly Played Non-English - $22.80
Played - $17.70
Played Non-English - $17.70
Heavily Played - $15.20
Heavily Played Non-English - $15.20
Damaged - $12.70
Damaged Non-English - $12.70