Name:Tidal Force
ManaCost:5 U U U
Types:Creature Elemental
PT:7/7
T:Mode$ Phase | Phase$ Upkeep | TriggerZones$ Battlefield | OptionalDecider$ You | Execute$ TrigTapOrUntap | TriggerDescription$ At the beginning of each upkeep, you may tap or untap target permanent.
SVar:TrigTapOrUntap:AB$ TapOrUntap | Cost$ 0 | ValidTgts$ Permanent | TgtPrompt$ Select target permanent
SVar:Picture:http://www.wizards.com/global/images/magic/general/tidal_force.jpg
Oracle:At the beginning of each upkeep, you may tap or untap target permanent.