Tengu 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.
Rulings
source: Rulings_Tengu (Format Library) · 4 era-inappropriate line(s) removedRulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.