REDU format ruling
Kasha

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by controlling 2 or more Zombie monsters. If this card is Special Summoned: Shuffle as many other monsters on the field as possible into the Deck, and if you do, this card's ATK becomes 1000 x the number of face-up monsters shuffled into the Deck this way, whose original Type was Zombie.
Rulings
- This card’s effect is a Trigger Effect. Setting the ATK equal to the number of Zombie-Type monsters x1000 is part of the resolution of the Trigger effect.
- If you return face-down Zombie-Type monsters to the Deck they are not counted towards the ATK of "Kasha." If you return Zombie-Type Fusion Monsters or Synchro Monsters to the Extra Deck, they count towards the ATK of "Kasha."
- If non-Zombie-Type monsters that are treated as Zombies by "Zombie World" are returned to the Deck by "Kasha" they do not count towards its ATK.
- If "Skill Drain" is activated, the ATK of "Kasha" becomes 0 and stays at 0 even if "Skill Drain" is later removed from the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.