Ojama Country

Field Spell

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".)

Rulings – Yugipedia

Printings:

Raging Battle: RGBT-EN098 (Rare) - 2009-05-12
OTS Tournament Pack 13 (POR): OP13-PT035 (Common) - 2020-06-15
Ghosts From the Past: GFTP-EN110 (Ultra Rare) - 2021-04-15
Speed Duel GX: Duel Academy Box: SGX1-ENI19 (Common) - 2022-03-17

Prices:

Cardmarket: 0.02 €
TCGplayer: $ 0.32