Ojama Country – Ghosts From the Past (Ultra Rare)

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”.)