Edison format ruling
Spellbinding Circle

Card effect (current official text)Activate this card by targeting 1 monster your opponent controls; it cannot attack or change its battle position. When that monster is destroyed, destroy this card.
Rulings
- The Battle Position of a monster targeted by this card can still be changed by card effects, such as Book of Moon, Stop Defense, etc.
- This card may select a face-down monster as a target. This prevents the monster from being Flip Summoned, but it will still be flipped face-up if it is the target of an attack.
- You can chain Spellbinding Circle to the activation of a Flip Effect when a monster is Flip Summoned or flipped face-up, but it will not negate the activation or resolution of the Flip Effect.
- You can activate Change of Heart and take control of a monster targeted by Spellbinding Circle but you cannot attack with it or change its Battle Position.
- If a monster attacks and you activate Spellbinding Circle, the monster’s attack stops.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.