Edison format ruling
Cold Wave
Card text as printed in this era① At the start of your Main Phase 1:
Until your next turn, Spell/Trap Cards/Effects cannot be Set on the field nor activated.
Rulings
- While this effect is applying, effects of already face-up Spells/Traps also can’t be activated. This means that if this effect is applying, the effect of Royal Oppression also can’t be activated. (However, continuous Spell/Trap effects will still apply).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.