REDU format ruling
Ojamuscle

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)(This card is always treated as a "Ojama" card.)
Select 1 face-up "Ojama King". Destroy all "Ojama" monsters on the field, except the selected "Ojama King". It gains 1000 ATK for each monster destroyed this way.
Rulings
- This card’s effect lasts for as long as the selected "Ojama King" remains face-up on the field.
- 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.
- "Ojamuscle" is considered to be an "Ojama" card, so you can send it from your hand to the GY for the cost of the first effect. If you control "Ojamuscle" and it is a monster (for example, with "Magical Hats"), it is considered an "Ojama" monster for the second effect.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.