Advanced format ruling
Emperor Sem
Card effect (current official text)Each time you Tribute Summon a monster, each player can select 1 card from their Graveyard and return it to the top of their Deck.
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.