Goat format ruling
A Feint Plan

Card effect (current official text)A player cannot attack face-down monsters during this turn.
Rulings
- If A Feint Plan is activated and you control only face-down monsters, your opponent cannot attack any of your monsters and they cannot attack your LP directly either.
- If you activate A Feint Plan after your opponent declares an attack against one of your face-down monsters, that attack resolves as normal, but they cannot attack other face-down monsters for the remainder of the turn. (This is because A Feint Plan prevents declaring an attack against a face-down monster, and the attack has already been declared by the time A Feint Plan resolves during the Battle Step.)
- If "A Feint Plan" is activated in response to an opponent’s declaration of an Attack on a face-down monster, that attack will resolve normally.
- Q: If you have only face-down monsters does "A Feint Plan" stop your opponent from attacking during the turn or would an attack go through directly to your LP? A: Your opponent may not attack your LP directly if all you have is face-down monsters on your side of the field and "A Feint Plan" has been activated. 02/03/04
- Q: If "A Feint Plan" has been activated, will the opponent still take damage if the attacking monster has the effect of attacking the opponent directly? A: A monster with the ability to attack directly, like Toon monsters, would still be able to attack directly. Any battle damage resulting from the attack will be calculated normally.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.