Edison format ruling
Creature Swap
Card text as printed in this era① Each player chooses 1 monster they control, and switches control of those monsters.
(those monsters can't change their Battle Positions for the rest of the turn).
Rulings
- Unless both monsters can change control, neither changes control.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.