Name:Sandstone Oracle
ManaCost:7
Types:Artifact Creature Sphinx
PT:4/4
K:Flying
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Card.Self | Execute$ TrigChooseOpp | TriggerDescription$ When CARDNAME enters the battlefield, choose an opponent. If that player has more cards in hand than you, draw cards equal to the difference.
SVar:TrigChooseOpp:AB$ ChoosePlayer | Cost$ 0 | Defined$ You | Choices$ Player.Opponent | AILogic$ MostCardsInHand | SubAbility$ DBDraw
SVar:DBDraw:DB$ Draw | NumCards$ X | References$ X,Y | Defined$ You | ConditionCheckSVar$ X | ConditionSVarCompare$ GE1
SVar:Y:Count$InYourHand
SVar:X:Count$InChosenHand/Minus.Y 
SVar:Picture:http://www.wizards.com/global/images/magic/general/sandstone_oracle.jpg
Oracle:Flying\nWhen Sandstone Oracle enters the battlefield, choose an opponent. If that player has more cards in hand than you, draw cards equal to the difference.