Name:Tiller Engine
ManaCost:2
Types:Artifact Creature Construct
PT:1/3
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Land.tapped+YouCtrl | Execute$ TrigCharm | TriggerZones$ Battlefield | TriggerDescription$ Whenever a land you control enters tapped, ABILITY
SVar:TrigCharm:DB$ Charm | Choices$ DBUntap,DBTap
SVar:DBUntap:DB$ Untap | Defined$ TriggeredCard | SpellDescription$ Untap that land.
SVar:DBTap:DB$ Tap | ValidTgts$ Permanent.OppCtrl+nonLand | TgtPrompt$ Select target nonland permanent an opponent controls | SpellDescription$ Tap target nonland permanent an opponent controls.
Oracle:Whenever a land you control enters tapped, choose one —\n• Untap that land.\n• Tap target nonland permanent an opponent controls.