Advanced format ruling
Ojama Country
Card effect (current official text)Once per turn, you can send 1 "Ojama" card from your hand to the Graveyard to Special Summon 1 "Ojama" monster from your Graveyard. While you control a face-up "Ojama" monster, switch the original ATK and DEF of all monsters on the field. ("Ojama" can include "Ojamuscle".)
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.