Rulings powered by The Netrep API. You cannot select occupied Monster Card Zones with 'Ojama King''s effect. If your opponent has 5 monsters on the field, then 'Ojama King''s effect is not applied. 'Ojama King''s effect activates and you select up to 3 Monster Card Zones when 'Ojama King' becomes face-up on the field. If you select up to 3 Monster Card Zones and your 'Ojama King' is flipped face-down, the Monster Card Zones are usable again. When 'Ojama King' is flipped face-up again, you can select up to 3 Monster Card Zones again. If you take control of your opponent's face-up 'Ojama King', you cannot select new Monster Card Zones because the zones are selected when 'Ojama King' becomes face-up on the field. [Re: Ojamuscle] This card's effect lasts for as long as the selected 'Ojama King' remains face-up on the field. [Re: Ojamuscle] This card targets 1 face-up 'Ojama King'. If 'Book of Moon' is chained to flip the targeted 'Ojama King' face-down all the other 'Ojama' monsters are destroyed, but no ATK increase is given.
Duelist Pack 2: Chazz Princeton
'Ojama Green' + 'Ojama Yellow' + 'Ojama Black'
Select up to 3 of your opponent's Monster Card Zones. As long as this card remains face-up on the field, the selected zones cannot be used.