Emperor Tanuki's Critter Count (MP24-EN156) - 25th Anniversary Tin: Dueling Mirrors 1st Edition

Cannot be Tributed while face-up in the Monster Zone. While this card is in the Monster Zone, when you Ritual Summon, you can also send 1 monster from your Extra Deck to the GY as 1 of the monsters used for the Ritual Summon. You can only use this effect of "Emperor Tanuki's Critter Count" once per turn.