Stand-Off (LVAL-EN069) - Legacy of the Valiant 1st Edition

Target 1 face-up Attack Position Effect Monster you control and 1 face-up Attack Position Effect Monster your opponent controls; negate both monsters' effects. While both of those monsters remain in face-up Attack Position, they cannot attack, they cannot be destroyed by battle, they cannot change their battle positions, also they are unaffected by other card effects.