Advanced format ruling
Shien's Spy
Card effect (current official text)Select 1 face-up monster you control to activate this card. Give control of the selected monster to your opponent until the End Phase of this turn.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.