Advanced format ruling
The Agent of Wisdom - Mercury
Card effect (current official text)During your Standby Phase, if you controlled this face-up card and had no cards in your hand at the end of the opponent's last End Phase: Draw 1 card.
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.