When your opponent activates a monster effect, while you control a Synchro Monster that lists a Synchro Monster as material: Negate the activation, also, after that, Set this card face-down instead of sending it to the GY. You can only activate 1 "Scrap-Iron Signal" per turn.
NM-Mint Unlimited - $0.25
Lightly Played Unlimited - $0.23
Moderately Played Unlimited - $0.20
Heavily Played Unlimited - $0.17
Damaged Unlimited - $0.13
NM-Mint 1st Edition - $0.25
Lightly Played 1st Edition - $0.23
Moderately Played 1st Edition - $0.20
Heavily Played 1st Edition - $0.17
Damaged 1st Edition - $0.13
NM-Mint Unlimited Non English - $0.25
Lightly Played Unlimited Non English - $0.23
Moderately Played Unlimited Non English - $0.20
Heavily Played Unlimited Non English - $0.17
Damaged Unlimited Non English - $0.13
NM-Mint 1st Edition Non English - $0.25
Lightly Played 1st Edition Non English - $0.23
Moderately Played 1st Edition Non English - $0.20
Heavily Played 1st Edition Non English - $0.17
Damaged 1st Edition Non English - $0.13