Edison format ruling
Spell Canceller

Card effect (current official text)Spell Cards, and their effects on the field, cannot be activated. Negate all Spell effects on the field.
Rulings
(1) As long as this card remains face-up on the field, Spell Cards cannot be activated. (2) The effects of all Spell Cards are also negated.
- The (1) Continuous Effect applies on the field.
- Players CANNOT activate (play face-up) Spell Card. This does not negate the activation of Spell Cards (the way Dark Bribe does), and so Spiritualism cannot be played.
- Player CAN activate the effects of Spell Cards on the field and in the GY.
- Lingering Effects that have already been established (ex: Limited Removal) are not affected.
- The (2) Continuous Effect applies on the field.
- Negate the effects of Spell Cards that activate & resolve on the field [REF].
- A Spell's effect that activates in the GY (ex: Geartown, Magical Blast) is not negated.
- Lingering Effects that have already been established (ex: Limited Removal) are not negated.
- VS. Named / Spell Counters: Remove all Clock Counters from Clock Tower Prison.
- VS. Premature Burial: Spell Canceller is not destroyed by the effect of Premature Burial.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.